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.
9 results
Oct 5, 2026DigitalCanion SA has discovered a vulnerability that allows remote attackers to execute arbitrary code on affected installations of the product.CVE-2026-104811 · Email & office · Mitel · reported by vulnerability@ncsc.chHigh 8.4
DigitalCanion SA has discovered a vulnerability that allows remote attackers to execute arbitrary code on affected installations of the product. Authentication may be required to exploit this vulnerability. The specific flaw exists within the Configuration → Services → Music on Hold functionality of the web portal listening on TCP port 443. The application is intended to allow users to upload WAV audio files but fails to properly validate the uploaded file type. An attacker can exploit this behavior to upload a malicious shared object (.so) instead of a WAV file. When the uploaded file is subsequently processed by the affected component, attacker-controlled code is loaded and executed in the context of the affected process. This can result in remote code execution and potentially full compromise of the underlying Linux system.
- Product
- Mitel MiVoice Office 400
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Oct 5, 2026This vulnerability allows remote attackers to delete sensitive files on vulnerable installations of Mitel MiVoice Office 400.CVE-2026-104810 · Email & office · Mitel · reported by vulnerability@ncsc.chHigh 8.4
This vulnerability allows remote attackers to delete sensitive files on vulnerable installations of Mitel MiVoice Office 400. Authentication is required to exploit this vulnerability. The specific flaw exists within the web portal listening on TCP port 443, under Maintenance → File Management → File Browser, which is affected by a directory traversal vulnerability. By exploiting this vulnerability, an authenticated attacker can access and delete files outside of the intended directory, including files belonging to the Mitel application and the underlying Linux system. Deleting critical system or application files can result in a denial-of-service condition affecting the underlying system.
- Product
- Mitel MiVoice Office 400
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Oct 5, 2026DigitalCanion has discovered a vulnerability that allows an attacker to cause the system to load an attacker-controlled .so file instead of the expected legitimCVE-2026-104809 · Email & office · Mitel · reported by vulnerability@ncsc.chHigh 8.4
DigitalCanion has discovered a vulnerability that allows an attacker to cause the system to load an attacker-controlled .so file instead of the expected legitimate module. The loading mechanism relies on a predictable module name without adequately verifying the file’s origin or integrity. A malicious shared object using the expected name can therefore be loaded by a privileged process. The module code then executes within the context and privileges of that process. This results in arbitrary code execution and full compromise of the Mitel Linux virtual machine.
- Product
- Mitel MiVoice Office 400
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Oct 5, 2026DigitalCanion has discovered a stored Cross-Site Scripting (XSS) vulnerability that allows an authenticated malicious user to inject persistent JavaScript or HTCVE-2026-104808 · Email & office · Mitel · reported by vulnerability@ncsc.chLow 1.9
DigitalCanion has discovered a stored Cross-Site Scripting (XSS) vulnerability that allows an authenticated malicious user to inject persistent JavaScript or HTML content, resulting in a denial-of-service condition within the web application. The specific flaw exists within the web portal listening on TCP port 443, under Configuration → Users → Users List. The vulnerability occurs in the “Microsoft Exchange mailbox” field, which fails to properly validate or sanitize user-supplied input before storing and rendering it. By injecting malicious JavaScript into this field, an attacker can cause the payload to execute whenever the affected user properties are accessed. This can prevent access to the affected user properties and result in a denial-of-service condition within the application's user-management functionality.
- Product
- Mitel MiVoice Office 400
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Oct 5, 2026DigitalCanion has discovered a stored Cross-Site Scripting (XSS) vulnerability that allows an authenticated malicious user to inject persistent JavaScript or HTCVE-2026-104807 · Email & office · Mitel · reported by vulnerability@ncsc.chLow 1.9
DigitalCanion has discovered a stored Cross-Site Scripting (XSS) vulnerability that allows an authenticated malicious user to inject persistent JavaScript or HTML content into the web application. The specific flaw exists within the web portal listening on TCP port 443, under Configuration → Domains, specifically in the “Description” field. The application fails to properly validate or sanitize user-supplied input before storing and subsequently rendering the field. By injecting malicious JavaScript into the Description field, an attacker can modify the content and behavior of the affected page when it is viewed by other users. This could allow an attacker to alter the page's appearance, display attacker-controlled content, or construct convincing phishing scenarios within the application's trusted web context.
- Product
- Mitel MiVoice Office 400
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Oct 5, 2026DigitalCanion has discovered a path traversal vulnerability that allows an attacker to access files outside of the intended directory.CVE-2026-104806 · Email & office · Mitel · reported by vulnerability@ncsc.chMedium 5.5
DigitalCanion has discovered a path traversal vulnerability that allows an attacker to access files outside of the intended directory. The specific flaw exists within the Maintenance → System Logs functionality of the web management portal listening on TCP port 443. The application fails to properly validate user-supplied file paths, allowing an attacker to manipulate the requested path and traverse the underlying directory structure. By exploiting this vulnerability, an attacker can access and download files located outside the intended system logs directory, including potentially sensitive system and application files.
- Product
- Mitel MiVoice Office 400
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Oct 5, 2026DigitalCanion has discovered a vulnerability in the backup restoration functionality that allows an attacker with access to the configured backup repository to CVE-2026-104805 · Email & office · Mitel · reported by vulnerability@ncsc.chHigh 8.5
DigitalCanion has discovered a vulnerability in the backup restoration functionality that allows an attacker with access to the configured backup repository to introduce arbitrary files into the system during restoration. The specific flaw exists within the backup restoration mechanism, which fails to properly validate the paths, file types, integrity, and authenticity of files contained within a restored TGZ archive. The application does not perform file-signature verification before extracting the archive, allowing a specially crafted backup to contain attacker-controlled files. An attacker with access to the backup SFTP or other configured repository can therefore provide a malicious TGZ archive that, when restored by the system, may place arbitrary files on the underlying Linux system. Depending on the location and permissions of the extracted files, this behavior can potentially be leveraged to achieve arbitrary code execution with root privileges and compromise the underlying virtual machine. The absence of enforced backup passwords further reduces the protection provided by the backup mechanism and may facilitate unauthorized access to the repository.
- Product
- Mitel MiVoice Office 400
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Oct 5, 2026DigitalCanion has discovered a path traversal vulnerability that allows to view or download sensitive system files over the portal https://<ip>:8443 via menus ACVE-2026-104706 · Email & office · Mitel · reported by vulnerability@ncsc.chHigh 8.4
DigitalCanion has discovered a path traversal vulnerability that allows to view or download sensitive system files over the portal https://<ip>:8443 via menus Administration -> View Logs
- Product
- Mitel MiVoice Office 400
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Oct 23, 2018A vulnerability in the web admin component of Mitel MiVoice Office 400, versions R5.0 HF3 (v8839a1) and earlier, could allow an unauthenticated attacker to condCVE-2018-16226 · Email & office · Mitel · reported by MITREMedium 6.1
A vulnerability in the web admin component of Mitel MiVoice Office 400, versions R5.0 HF3 (v8839a1) and earlier, could allow an unauthenticated attacker to conduct a reflected cross-site scripting (XSS) attack, due to insufficient validation for the start.asp page. A successful exploit could allow the attacker to execute arbitrary scripts to access sensitive browser-based information.
- Product
- Mivoice Office 400
- 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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