Vulnerability database
Every flaw the U.S. government’s cybersecurity agency (CISA) has confirmed attackers are using, plus the new WordPress plugin and theme bugs published each day, sorted by what they mean for a small business. We refresh it twice a day. If you see something your website or office runs, tell us.
2,889 results · page 1 of 58
Oct 22, 2026PhpSpreadsheet is a pure PHP library for reading and writing spreadsheet files.CVE-2026-108360 · Websites & servers · PHPOffice · reported by GitHubMedium 6.4
PhpSpreadsheet is a pure PHP library for reading and writing spreadsheet files. Prior to 1.30.7, 2.1.19, 2.4.8, 3.10.8, and 5.10.0, Worksheet\Drawing::setPath validates only the initial external-image URL with setIsWhitelisted when setAllowExternalImages is enabled. The HTTP stream context permits PHP to follow a redirect without applying the callback to the redirected URL, so a permitted image host can redirect the server to an internal address and cause a blind GET request. The response body is not returned to the attacker because the reader validates the downloaded content as an image and removes the temporary file, but internal GET-driven endpoints, network reachability, and cloud metadata endpoints may be reached. This issue is fixed in versions 1.30.7, 2.1.19, 2.4.8, 3.10.8, and 5.10.0.
- Product
- PhpSpreadsheet
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Oct 22, 2026PhpSpreadsheet is a pure PHP library for reading and writing spreadsheet files.CVE-2026-108359 · Websites & servers · PHPOffice · reported by GitHubHigh 8.7
PhpSpreadsheet is a pure PHP library for reading and writing spreadsheet files. Prior to 1.30.7, 2.1.19, 2.4.8, 3.10.8, and 5.10.0, Ods::processTableRow in src/PhpSpreadsheet/Reader/Ods.php accepts an unbounded table:number-rows-repeated attribute from an ODS table row. When the row contains a value, the reader materializes a cell for every repetition without checking the spreadsheet row limit, so a small attacker-controlled ODS file can consume substantial CPU and memory and terminate the PHP worker. Column repetition is separately bounded and is not part of this vulnerability. This issue is fixed in versions 1.30.7, 2.1.19, 2.4.8, 3.10.8, and 5.10.0.
- Product
- PhpSpreadsheet
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Oct 22, 2026PhpSpreadsheet is a pure PHP library for reading and writing spreadsheet files.CVE-2026-108358 · Websites & servers · PHPOffice · reported by GitHubHigh 8.8
PhpSpreadsheet is a pure PHP library for reading and writing spreadsheet files. Prior to 1.30.7, 2.1.19, 2.4.8, 3.10.8, and 5.10.0, XmlScanner::scan in src/PhpSpreadsheet/Reader/Security/XmlScanner.php uses a DOCTYPE detection pattern that accounts for NUL-byte interleaving but not ISO-2022 escape sequences in XLSX XML parts. The escape sequences prevent the scanner from matching the declaration, and XML charset normalization then removes the escape bytes before parsing, exposing a valid DOCTYPE and entity definitions. Processing an attacker-controlled XLSX can therefore cause entity-expansion denial of service on supported PHP versions and can permit local file access or SSRF on PHP before 8.0 or when LIBXML_NOENT is enabled. This issue is fixed in versions 1.30.7, 2.1.19, 2.4.8, 3.10.8, and 5.10.0.
- Product
- PhpSpreadsheet
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Oct 22, 2026PhpSpreadsheet is a pure PHP library for reading and writing spreadsheet files.CVE-2026-108357 · Websites & servers · PHPOffice · reported by GitHubHigh 8.8
PhpSpreadsheet is a pure PHP library for reading and writing spreadsheet files. From 3.3.0 until 3.10.8 and 5.10.0, Reader\Xml passes stored SpreadsheetML XML through XmlScanner::scan in Xml::canRead and Xml::trySimpleXMLLoadStringPrivate, while Xml::unentity decodes numeric entities only after each DOCTYPE pattern check. A double-encoded less-than character is reduced by the first callback to another encoded character and by the second callback to a literal less-than sign, so SimpleXML receives an unchecked DOCTYPE and entity declaration. Processing attacker-controlled SpreadsheetML XML can cause entity-expansion denial of service and can permit local file access or SSRF on PHP before 8.0 or when LIBXML_NOENT is enabled. This issue is fixed in versions 3.10.8 and 5.10.0.
- Product
- PhpSpreadsheet
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Oct 22, 2026Intermesh Group-Office 3.3.0 before 3.5.5 contains an unauthenticated path traversal vulnerability in compress.php that allows remote attackers to read arbitrarCVE-2018-25438 · Other software · Intermesh · reported by VulnCheckHigh 8.7
Intermesh Group-Office 3.3.0 before 3.5.5 contains an unauthenticated path traversal vulnerability in compress.php that allows remote attackers to read arbitrary files by manipulating the 'file' parameter. Attackers can send GET requests to /compress.php with '../' sequences in the 'file' parameter, which is appended to the cache path and passed to readfile(), to read files such as /etc/passwd. Exploitation evidence was first observed by the Shadowserver Foundation on 2023-10-21.
- Product
- Group-Office
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordcxsecurity.comgithub.com
Oct 21, 2026PHPOffice PHPPresentation 1.2.0 contains a cross-site scripting vulnerability in the HTML writer that allows attackers who supply presentation content to injectCVE-2026-114404 · Websites & servers · PHPOffice · reported by VulnCheckMedium 5.3
PHPOffice PHPPresentation 1.2.0 contains a cross-site scripting vulnerability in the HTML writer that allows attackers who supply presentation content to inject script into generated HTML. Attackers can craft a PPTX with malicious text runs, hyperlink relationship targets, or shape descr attributes that are emitted unescaped, executing script in viewers' browsers.
- Product
- PHPPresentation
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Oct 21, 2026PHPOffice PHPPresentation through 1.2.0 contains an insecure deserialization vulnerability that allows attackers to instantiate arbitrary PHP objects by supplyiCVE-2026-114403 · Websites & servers · PHPOffice · reported by VulnCheckCritical 9.2
PHPOffice PHPPresentation through 1.2.0 contains an insecure deserialization vulnerability that allows attackers to instantiate arbitrary PHP objects by supplying a crafted presentation file. Attackers can upload a ZIP containing PhpPresentation.xml that IOFactory::load passes to unserialize(), enabling gadget-chain code execution, file writes, or denial of service.
- Product
- PHPPresentation
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Oct 16, 2026Umbraco CMS before 17.7.1 and 18.2.1 contains a missing authorization vulnerability that allows unauthenticated clients to connect to the backoffice PreviewHub CVE-2026-111624 · Other software · umbraco · reported by VulnCheckMedium 6.3
Umbraco CMS before 17.7.1 and 18.2.1 contains a missing authorization vulnerability that allows unauthenticated clients to connect to the backoffice PreviewHub and BackofficeHub SignalR hubs. Attackers can complete the SignalR negotiate step and receive refreshed notifications that disclose content keys, including unpublished content, and reveal editorial activity timing.
- Product
- Umbraco-CMS
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Oct 15, 2026Out-of-bounds read in Microsoft Office PowerPoint allows an unauthorized attacker to disclose information over a network.CVE-2026-108455 · Computers, phones & browsers · Microsoft · reported by secure@microsoft.comMedium 6.5
Out-of-bounds read in Microsoft Office PowerPoint allows an unauthorized attacker to disclose information over a network.
- Product
- Microsoft 365 Apps for Enterprise
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Oct 15, 2026Buffer over-read in Microsoft Office PowerPoint allows an unauthorized attacker to disclose information over a network.CVE-2026-108454 · Computers, phones & browsers · Microsoft · reported by secure@microsoft.comMedium 6.5
Buffer over-read in Microsoft Office PowerPoint allows an unauthorized attacker to disclose information over a network.
- Product
- Microsoft 365 Apps for Enterprise
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Oct 15, 2026Out-of-bounds read in Microsoft Office PowerPoint allows an unauthorized attacker to disclose information over a network.CVE-2026-108453 · Computers, phones & browsers · Microsoft · reported by secure@microsoft.comMedium 6.5
Out-of-bounds read in Microsoft Office PowerPoint allows an unauthorized attacker to disclose information over a network.
- Product
- Microsoft 365 Apps for Enterprise
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Oct 15, 2026Improper limitation of a pathname to a restricted directory ('path traversal') in Microsoft Office SharePoint allows an authorized attacker to execute code overCVE-2026-108452 · Email & office · Microsoft · reported by secure@microsoft.comHigh 8.8
Improper limitation of a pathname to a restricted directory ('path traversal') in Microsoft Office SharePoint allows an authorized attacker to execute code over a network.
- Product
- Microsoft SharePoint Server Subscription Edition
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Oct 15, 2026Numeric truncation error in Microsoft Office Word allows an unauthorized attacker to execute code over a network.CVE-2026-108451 · Computers, phones & browsers · Microsoft · reported by secure@microsoft.comHigh 8.8
Numeric truncation error in Microsoft Office Word allows an unauthorized attacker to execute code over a network.
- Product
- Microsoft 365 Apps for Enterprise
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Oct 15, 2026Heap-based buffer overflow in Microsoft Office Word allows an unauthorized attacker to execute code over a network.CVE-2026-108450 · Computers, phones & browsers · Microsoft · reported by secure@microsoft.comHigh 8.8
Heap-based buffer overflow in Microsoft Office Word allows an unauthorized attacker to execute code over a network.
- Product
- Microsoft 365 Apps for Enterprise
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Oct 15, 2026Heap-based buffer overflow in Microsoft Office Word allows an unauthorized attacker to execute code over a network.CVE-2026-108449 · Computers, phones & browsers · Microsoft · reported by secure@microsoft.comHigh 8.8
Heap-based buffer overflow in Microsoft Office Word allows an unauthorized attacker to execute code over a network.
- Product
- Microsoft 365 Apps for Enterprise
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Oct 15, 2026Heap-based buffer overflow in Microsoft Office Outlook allows an unauthorized attacker to execute code over a network.CVE-2026-108448 · Computers, phones & browsers · Microsoft · reported by secure@microsoft.comHigh 7.5
Heap-based buffer overflow in Microsoft Office Outlook allows an unauthorized attacker to execute code over a network.
- Product
- Microsoft 365 Apps for Enterprise
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Oct 15, 2026Heap-based buffer overflow in Microsoft Office Word allows an unauthorized attacker to execute code over a network.CVE-2026-108447 · Computers, phones & browsers · Microsoft · reported by secure@microsoft.comHigh 8.8
Heap-based buffer overflow in Microsoft Office Word allows an unauthorized attacker to execute code over a network.
- Product
- Microsoft 365 Apps for Enterprise
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Oct 15, 2026Use after free in Microsoft Office Excel allows an unauthorized attacker to execute code over a network.CVE-2026-108446 · Computers, phones & browsers · Microsoft · reported by secure@microsoft.comHigh 8.8
Use after free in Microsoft Office Excel allows an unauthorized attacker to execute code over a network.
- Product
- Microsoft 365 Apps for Enterprise
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Oct 15, 2026Stack-based buffer overflow in Microsoft Office Word allows an unauthorized attacker to execute code over a network.CVE-2026-108445 · Computers, phones & browsers · Microsoft · reported by secure@microsoft.comHigh 8.8
Stack-based buffer overflow in Microsoft Office Word allows an unauthorized attacker to execute code over a network.
- Product
- Microsoft 365 Apps for Enterprise
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Oct 15, 2026Heap-based buffer overflow in Microsoft Office allows an unauthorized attacker to execute code over a network.CVE-2026-108444 · Computers, phones & browsers · Microsoft · reported by secure@microsoft.comHigh 8.8
Heap-based buffer overflow in Microsoft Office allows an unauthorized attacker to execute code over a network.
- Product
- Microsoft 365 Apps for Enterprise
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Oct 15, 2026Off-by-one error in Microsoft Office Word allows an unauthorized attacker to execute code over a network.CVE-2026-108443 · Computers, phones & browsers · Microsoft · reported by secure@microsoft.comHigh 8.8
Off-by-one error in Microsoft Office Word allows an unauthorized attacker to execute code over a network.
- Product
- Microsoft 365 Apps for Enterprise
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Oct 15, 2026Use after free in Microsoft Office Word allows an unauthorized attacker to execute code over a network.CVE-2026-108442 · Computers, phones & browsers · Microsoft · reported by secure@microsoft.comHigh 8.8
Use after free in Microsoft Office Word allows an unauthorized attacker to execute code over a network.
- Product
- Microsoft 365 Apps for Enterprise
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Oct 15, 2026Heap-based buffer overflow in Microsoft Office Word allows an unauthorized attacker to execute code over a network.CVE-2026-108441 · Computers, phones & browsers · Microsoft · reported by secure@microsoft.comHigh 8.8
Heap-based buffer overflow in Microsoft Office Word allows an unauthorized attacker to execute code over a network.
- Product
- Microsoft 365 Apps for Enterprise
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Oct 15, 2026Stack-based buffer overflow in Microsoft Office Word allows an unauthorized attacker to execute code over a network.CVE-2026-108440 · Computers, phones & browsers · Microsoft · reported by secure@microsoft.comHigh 8.8
Stack-based buffer overflow in Microsoft Office Word allows an unauthorized attacker to execute code over a network.
- Product
- Microsoft 365 Apps for Enterprise
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Oct 15, 2026Heap-based buffer overflow in Microsoft Office Word allows an unauthorized attacker to execute code over a network.CVE-2026-108439 · Computers, phones & browsers · Microsoft · reported by secure@microsoft.comHigh 8.8
Heap-based buffer overflow in Microsoft Office Word allows an unauthorized attacker to execute code over a network.
- Product
- Microsoft 365 Apps for Enterprise
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Oct 15, 2026Use after free in Microsoft Office Word allows an unauthorized attacker to disclose information over a network.CVE-2026-108438 · Computers, phones & browsers · Microsoft · reported by secure@microsoft.comMedium 6.5
Use after free in Microsoft Office Word allows an unauthorized attacker to disclose information over a network.
- Product
- Microsoft 365 Apps for Enterprise
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Oct 15, 2026Heap-based buffer overflow in Microsoft Office Word allows an unauthorized attacker to execute code over a network.CVE-2026-108437 · Computers, phones & browsers · Microsoft · reported by secure@microsoft.comHigh 8.8
Heap-based buffer overflow in Microsoft Office Word allows an unauthorized attacker to execute code over a network.
- Product
- Microsoft 365 Apps for Enterprise
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Oct 15, 2026Out-of-bounds read in Microsoft Office Word allows an unauthorized attacker to disclose information over a network.CVE-2026-108436 · Computers, phones & browsers · Microsoft · reported by secure@microsoft.comMedium 6.5
Out-of-bounds read in Microsoft Office Word allows an unauthorized attacker to disclose information over a network.
- Product
- Microsoft 365 Apps for Enterprise
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Oct 15, 2026Untrusted pointer dereference in Microsoft Office Word allows an unauthorized attacker to disclose information over a network.CVE-2026-108435 · Computers, phones & browsers · Microsoft · reported by secure@microsoft.comMedium 6.5
Untrusted pointer dereference in Microsoft Office Word allows an unauthorized attacker to disclose information over a network.
- Product
- Microsoft 365 Apps for Enterprise
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Oct 15, 2026Out-of-bounds read in Microsoft Office Word allows an unauthorized attacker to disclose information over a network.CVE-2026-108434 · Computers, phones & browsers · Microsoft · reported by secure@microsoft.comMedium 6.5
Out-of-bounds read in Microsoft Office Word allows an unauthorized attacker to disclose information over a network.
- Product
- Microsoft 365 Apps for Enterprise
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Oct 15, 2026Reliance on untrusted inputs in a security decision in Microsoft Office Word allows an unauthorized attacker to bypass a security feature locally.CVE-2026-108433 · Computers, phones & browsers · Microsoft · reported by secure@microsoft.comHigh 7.8
Reliance on untrusted inputs in a security decision in Microsoft Office Word allows an unauthorized attacker to bypass a security feature locally.
- Product
- Microsoft 365 Apps for Enterprise
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Oct 15, 2026Heap-based buffer overflow in Microsoft Office Word allows an unauthorized attacker to execute code over a network.CVE-2026-108432 · Computers, phones & browsers · Microsoft · reported by secure@microsoft.comHigh 8.8
Heap-based buffer overflow in Microsoft Office Word allows an unauthorized attacker to execute code over a network.
- Product
- Microsoft 365 Apps for Enterprise
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Oct 15, 2026Stack-based buffer overflow in Microsoft Office Word allows an unauthorized attacker to execute code over a network.CVE-2026-108431 · Computers, phones & browsers · Microsoft · reported by secure@microsoft.comHigh 8.8
Stack-based buffer overflow in Microsoft Office Word allows an unauthorized attacker to execute code over a network.
- Product
- Microsoft 365 Apps for Enterprise
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Oct 15, 2026Heap-based buffer overflow in Microsoft Office Word allows an unauthorized attacker to execute code over a network.CVE-2026-108430 · Computers, phones & browsers · Microsoft · reported by secure@microsoft.comHigh 8.8
Heap-based buffer overflow in Microsoft Office Word allows an unauthorized attacker to execute code over a network.
- Product
- Microsoft 365 Apps for Enterprise
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Oct 15, 2026Heap-based buffer overflow in Microsoft Office Word allows an unauthorized attacker to execute code over a network.CVE-2026-108429 · Computers, phones & browsers · Microsoft · reported by secure@microsoft.comHigh 8.8
Heap-based buffer overflow in Microsoft Office Word allows an unauthorized attacker to execute code over a network.
- Product
- Microsoft 365 Apps for Enterprise
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Oct 15, 2026Heap-based buffer overflow in Microsoft Office Word allows an unauthorized attacker to execute code over a network.CVE-2026-108428 · Computers, phones & browsers · Microsoft · reported by secure@microsoft.comHigh 8.8
Heap-based buffer overflow in Microsoft Office Word allows an unauthorized attacker to execute code over a network.
- Product
- Microsoft 365 Apps for Enterprise
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Oct 15, 2026Heap-based buffer overflow in Microsoft Office Word allows an unauthorized attacker to execute code over a network.CVE-2026-108427 · Computers, phones & browsers · Microsoft · reported by secure@microsoft.comHigh 8.8
Heap-based buffer overflow in Microsoft Office Word allows an unauthorized attacker to execute code over a network.
- Product
- Microsoft 365 Apps for Enterprise
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Oct 15, 2026Heap-based buffer overflow in Microsoft Office Word allows an unauthorized attacker to execute code over a network.CVE-2026-108426 · Computers, phones & browsers · Microsoft · reported by secure@microsoft.comHigh 8.8
Heap-based buffer overflow in Microsoft Office Word allows an unauthorized attacker to execute code over a network.
- Product
- Microsoft 365 Apps for Enterprise
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Oct 14, 2026Missing authorization in Microsoft Office SharePoint allows an authorized attacker to elevate privileges over a network.CVE-2026-88164 · Email & office · Microsoft · reported by secure@microsoft.comHigh 8.8
Missing authorization in Microsoft Office SharePoint allows an authorized attacker to elevate privileges over a network.
- Product
- Microsoft SharePoint Server Subscription Edition
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Oct 14, 2026office-converter through 1.0.2 contains an OS command injection vulnerability that allows attackers to execute commands by supplying a crafted fileName to generCVE-2020-37282 · Other software · vworld4u · reported by VulnCheckCritical 9.3
office-converter through 1.0.2 contains an OS command injection vulnerability that allows attackers to execute commands by supplying a crafted fileName to generatePdf() or generateHtml(). Attackers can embed $(...), backticks, or a closing quote with shell metacharacters in the file name, which is concatenated into an unoconv command run via child_process.exec(), executing commands with Node.js process privileges.
- Product
- office-converter
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Oct 14, 2026ONLYOFFICE DocumentServer before 10.0.0 contains an unauthenticated server-side request forgery vulnerability in the /downloadfile/:docid endpoint that allows rCVE-2026-110652 · Other software · ONLYOFFICE · reported by VulnCheckMedium 6.3
ONLYOFFICE DocumentServer before 10.0.0 contains an unauthenticated server-side request forgery vulnerability in the /downloadfile/:docid endpoint that allows remote attackers to bypass the private-IP request-filtering-agent by exploiting the isInJwtToken flag when JWT verification is disabled in the default configuration. Attackers can submit a crafted request body containing an internal or loopback URL, which is treated as a DIRECT request skipping private-address filtering, causing the server to fetch and proxy back arbitrary private-network and cloud metadata content.
- Product
- DocumentServer
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Oct 13, 2026A remote code execution vulnerability in ONLYOFFICE Document Server versions before10.0.0 allows an authenticated attacker with a valid Inbox-compatible JWT to CVE-2026-110385 · Other software · ONLYOFFICE · reported by MITREHigh 8.7
A remote code execution vulnerability in ONLYOFFICE Document Server versions before10.0.0 allows an authenticated attacker with a valid Inbox-compatible JWT to execute arbitrary operating system commands as the ds service account. The Document Builder API improperly processes user-controlled converter XML supplied through the optional third argument of builder.SaveFile(). By injecting a duplicate m_sFileTo element, an attacker can override the server-generated output path and write arbitrary content outside the designated job directory. This allows the attacker to overwrite the runtime.json configuration file, modify the Document Builder executable path and arguments, and execute arbitrary commands when a subsequent Document Builder job is processed.
- Product
- Document Server
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Oct 13, 2026Heap-based buffer overflow in Microsoft Office Visio allows an unauthorized attacker to execute code over a network.CVE-2026-102855 · Computers, phones & browsers · Microsoft · reported by secure@microsoft.comHigh 8.8
Heap-based buffer overflow in Microsoft Office Visio allows an unauthorized attacker to execute code over a network.
- Product
- Microsoft 365 Apps for Enterprise
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Oct 13, 2026Improper neutralization of input during web page generation ('cross-site scripting') in Microsoft Office SharePoint allows an unauthorized attacker to perform sCVE-2026-97783 · Email & office · Microsoft · reported by secure@microsoft.comHigh 8.1
Improper neutralization of input during web page generation ('cross-site scripting') in Microsoft Office SharePoint allows an unauthorized attacker to perform spoofing over a network.
- Product
- Microsoft SharePoint Enterprise Server 2016
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Oct 13, 2026Observable discrepancy in Microsoft Office SharePoint allows an authorized attacker to perform tampering over a network.CVE-2026-97782 · Email & office · Microsoft · reported by secure@microsoft.comMedium 6.8
Observable discrepancy in Microsoft Office SharePoint allows an authorized attacker to perform tampering over a network.
- Product
- Microsoft SharePoint Server Subscription Edition
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Oct 13, 2026Improper neutralization of special elements used in a command ('command injection') in Microsoft Office OneNote allows an unauthorized attacker to execute code CVE-2026-97781 · Computers, phones & browsers · Microsoft · reported by secure@microsoft.comHigh 8.8
Improper neutralization of special elements used in a command ('command injection') in Microsoft Office OneNote allows an unauthorized attacker to execute code over a network.
- Product
- Microsoft 365 Apps for Enterprise
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Oct 13, 2026Heap-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code over a network.CVE-2026-97780 · Computers, phones & browsers · Microsoft · reported by secure@microsoft.comHigh 8.8
Heap-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code over a network.
- Product
- Microsoft 365 Apps for Enterprise
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Oct 13, 2026Out-of-bounds read in Microsoft Office Excel allows an unauthorized attacker to disclose information over a network.CVE-2026-97779 · Computers, phones & browsers · Microsoft · reported by secure@microsoft.comMedium 6.5
Out-of-bounds read in Microsoft Office Excel allows an unauthorized attacker to disclose information over a network.
- Product
- Microsoft 365 Apps for Enterprise
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Oct 13, 2026Integer overflow or wraparound in Microsoft Office Excel allows an unauthorized attacker to execute code over a network.CVE-2026-97778 · Computers, phones & browsers · Microsoft · reported by secure@microsoft.comHigh 8.8
Integer overflow or wraparound in Microsoft Office Excel allows an unauthorized attacker to execute code over a network.
- Product
- Microsoft 365 Apps for Enterprise
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Oct 13, 2026Heap-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code over a network.CVE-2026-97777 · Computers, phones & browsers · Microsoft · reported by secure@microsoft.comHigh 8.8
Heap-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code over a network.
- Product
- Microsoft 365 Apps for Enterprise
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Where this comes from: the exploited list is CISA’s Known Exploited Vulnerabilities catalog. Everything else is the whole National Vulnerability Database, where each record is published by the team that found the bug (Wordfence, Patchstack, WPScan, the vendors themselves and others); we show who. Exploit odds are FIRST’s EPSS, updated daily. Titles and categories are ours, so check the linked record before acting on a detail. For a write-up of the big ones, see our advisories. Every vendor, and every WordPress plugin and theme with a recorded flaw, also has its own page. All of it is free to reuse as JSON, CSV or RSS.
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