Critical security advisoryCriticalFlagged by our vulnerability database: PHP2Shell is on CISA’s exploited list. Most WordPress hosting runs PHP. See if your site is affectedFlagged by our vulnerability database: PHP2Shell is being exploited. DetailsExploited: PHP2Shell. Check your site
HuttenlocherTechnologies
Updated 3 h ago

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.

1,762exploited flaws on CISA’s list
34added in the last 30 days
344new WordPress flaws this week
390,080entries in the database

21 results

  • Oct 18, 2021An exploitable double-free vulnerability exists in the JavaScript implementation of Nitro Pro PDF.CVE-2021-21797 · Other software · Gonitro · reported by talos-cna@cisco.comHigh 7.8

    An exploitable double-free vulnerability exists in the JavaScript implementation of Nitro Pro PDF. A specially crafted document can cause a reference to a timeout object to be stored in two different places. When closed, the document will result in the reference being released twice. This can lead to code execution under the context of the application. An attacker can convince a user to open a document to trigger this vulnerability.

    Product
    Nitro Pro
    What to do
    Apply the vendor’s update. The NVD record links to the advisory.
  • Oct 18, 2021An exploitable use-after-free vulnerability exists in the JavaScript implementation of Nitro Pro PDF.CVE-2021-21796 · Other software · Gonitro · reported by talos-cna@cisco.comHigh 7.8

    An exploitable use-after-free vulnerability exists in the JavaScript implementation of Nitro Pro PDF. A specially crafted document can cause an object containing the path to a document to be destroyed and then later reused, resulting in a use-after-free vulnerability, which can lead to code execution under the context of the application. An attacker can convince a user to open a document to trigger this vulnerability.

    Product
    Nitro Pro
    What to do
    Apply the vendor’s update. The NVD record links to the advisory.
  • Sep 15, 2021An exploitable return of stack variable address vulnerability exists in the JavaScript implementation of Nitro Pro PDF.CVE-2021-21798 · Other software · Gonitro · reported by talos-cna@cisco.comHigh 7.8

    An exploitable return of stack variable address vulnerability exists in the JavaScript implementation of Nitro Pro PDF. A specially crafted document can cause a stack variable to go out of scope, resulting in the application dereferencing a stale pointer. This can lead to code execution under the context of the application. An attacker can convince a user to open a document to trigger the vulnerability.

    Product
    Nitro Pro
    What to do
    Apply the vendor’s update. The NVD record links to the advisory.
  • Sep 17, 2020An arbitrary code execution vulnerability exists in the rendering functionality of Nitro Software, Inc.’s Nitro Pro 13.13.2.242.CVE-2020-6116 · Other software · Gonitro · reported by talos-cna@cisco.comHigh 7.8

    An arbitrary code execution vulnerability exists in the rendering functionality of Nitro Software, Inc.’s Nitro Pro 13.13.2.242. When drawing the contents of a page using colors from an indexed colorspace, the application can miscalculate the size of a buffer when allocating space for its colors. When using this allocated buffer, the application can write outside its bounds and cause memory corruption which can lead to code execution. A specially crafted document must be loaded by a victim in order to trigger this vulnerability.

    Product
    Nitro Pro
    What to do
    Apply the vendor’s update. The NVD record links to the advisory.
  • Sep 17, 2020An exploitable vulnerability exists in the cross-reference table repairing functionality of Nitro Software, Inc.’s Nitro Pro 13.13.2.242.CVE-2020-6115 · Other software · Gonitro · reported by talos-cna@cisco.comHigh 7.8

    An exploitable vulnerability exists in the cross-reference table repairing functionality of Nitro Software, Inc.’s Nitro Pro 13.13.2.242. While searching for an object identifier in a malformed document that is missing from the cross-reference table, the application will save a reference to the object’s cross-reference table entry inside a stack variable. If the referenced object identifier is not found, the application may resize the cross-reference table which can change the scope of its entry. Later when the application tries to reference cross-reference entry via the stack variable, the application will access memory belonging to the recently freed table causing a use-after-free condition. A specially crafted document can be delivered by an attacker and loaded by a victim in order to trigger this vulnerability.

    Product
    Nitro Pro
    What to do
    Apply the vendor’s update. The NVD record links to the advisory.
  • Sep 17, 2020An exploitable vulnerability exists in the object stream parsing functionality of Nitro Software, Inc.’s Nitro Pro 13.13.2.242 when updating its cross-referenceCVE-2020-6113 · Other software · Gonitro · reported by talos-cna@cisco.comHigh 7.8

    An exploitable vulnerability exists in the object stream parsing functionality of Nitro Software, Inc.’s Nitro Pro 13.13.2.242 when updating its cross-reference table. When processing an object stream from a PDF document, the application will perform a calculation in order to allocate memory for the list of indirect objects. Due to an error when calculating this size, an integer overflow may occur which can result in an undersized buffer being allocated. Later when initializing this buffer, the application can write outside its bounds which can cause a memory corruption that can lead to code execution. A specially crafted document can be delivered to a victim in order to trigger this vulnerability.

    Product
    Nitro Pro
    What to do
    Apply the vendor’s update. The NVD record links to the advisory.
  • Sep 17, 2020An exploitable code execution vulnerability exists in the JPEG2000 Stripe Decoding functionality of Nitro Software, Inc.’s Nitro Pro 13.13.2.242 when decoding sCVE-2020-6112 · Other software · Gonitro · reported by talos-cna@cisco.comHigh 7.8

    An exploitable code execution vulnerability exists in the JPEG2000 Stripe Decoding functionality of Nitro Software, Inc.’s Nitro Pro 13.13.2.242 when decoding sub-samples. While initializing tiles with sub-sample data, the application can miscalculate a pointer for the stripes in the tile which allow for the decoder to write out of-bounds and cause memory corruption. This can result in code execution. A specially crafted image can be embedded inside a PDF and loaded by a victim in order to trigger this vulnerability.

    Product
    Nitro Pro
    What to do
    Apply the vendor’s update. The NVD record links to the advisory.
  • Sep 16, 2020An exploitable code execution vulnerability exists in the rendering functionality of Nitro Pro 13.13.2.242 and 13.16.2.300.CVE-2020-6146 · Other software · Gonitro · reported by talos-cna@cisco.comHigh 8.8

    An exploitable code execution vulnerability exists in the rendering functionality of Nitro Pro 13.13.2.242 and 13.16.2.300. When drawing the contents of a page and selecting the stroke color from an 'ICCBased' colorspace, the application will read a length from the file and use it as a loop sentinel when writing data into the member of an object. Due to the object member being a buffer of a static size allocated on the heap, this can result in a heap-based buffer overflow. A specially crafted document must be loaded by a victim in order to trigger this vulnerability.

    Product
    Nitro Pro
    What to do
    Apply the vendor’s update. The NVD record links to the advisory.
  • May 18, 2020An exploitable information disclosure vulnerability exists in the way Nitro Pro 13.9.1.155 does XML error handling.CVE-2020-6093 · Other software · Gonitro · reported by talos-cna@cisco.comMedium 5.5

    An exploitable information disclosure vulnerability exists in the way Nitro Pro 13.9.1.155 does XML error handling. A specially crafted PDF document can cause uninitialized memory access resulting in information disclosure. In order to trigger this vulnerability, victim must open a malicious file.

    Product
    Nitro Pro
    What to do
    Apply the vendor’s update. The NVD record links to the advisory.
  • May 18, 2020An exploitable code execution vulnerability exists in the way Nitro Pro 13.9.1.155 parses Pattern objects.CVE-2020-6092 · Other software · Gonitro · reported by talos-cna@cisco.comHigh 7.8

    An exploitable code execution vulnerability exists in the way Nitro Pro 13.9.1.155 parses Pattern objects. A specially crafted PDF file can trigger an integer overflow that can lead to arbitrary code execution. In order to trigger this vulnerability, victim must open a malicious file.

    Product
    Nitro Pro
    What to do
    Apply the vendor’s update. The NVD record links to the advisory.
  • May 18, 2020An exploitable code execution vulnerability exists in the PDF parser of Nitro Pro 13.9.1.155.CVE-2020-6074 · Other software · Gonitro · reported by talos-cna@cisco.comHigh 8.8

    An exploitable code execution vulnerability exists in the PDF parser of Nitro Pro 13.9.1.155. A specially crafted PDF document can cause a use-after-free which can lead to remote code execution. An attacker can provide a malicious file to trigger this vulnerability.

    Product
    Nitro Pro
    What to do
    Apply the vendor’s update. The NVD record links to the advisory.
  • Mar 8, 2020npdf.dll in Nitro Pro before 13.13.2.242 is vulnerable to JBIG2Decode CNxJBIG2DecodeStream Heap Corruption at npdf!CAPPDAnnotHandlerUtils::create_popup_for_markCVE-2020-10223 · Other software · Gonitro · reported by MITREHigh 8.1

    npdf.dll in Nitro Pro before 13.13.2.242 is vulnerable to JBIG2Decode CNxJBIG2DecodeStream Heap Corruption at npdf!CAPPDAnnotHandlerUtils::create_popup_for_markup+0x12fbe via a crafted PDF document.

    Product
    Nitro Pro
    What to do
    Apply the vendor’s update. The NVD record links to the advisory.
  • Mar 8, 2020npdf.dll in Nitro Pro before 13.13.2.242 is vulnerable to Heap Corruption at npdf!nitro::get_property+2381 via a crafted PDF document.CVE-2020-10222 · Other software · Gonitro · reported by MITREHigh 8.1

    npdf.dll in Nitro Pro before 13.13.2.242 is vulnerable to Heap Corruption at npdf!nitro::get_property+2381 via a crafted PDF document.

    Product
    Nitro Pro
    What to do
    Apply the vendor’s update. The NVD record links to the advisory.
  • Nov 21, 2019Nitro Pro before 13.2 creates a debug.log file in the directory where a .pdf file is located, if the .pdf document was produced by an OCR operation on the JPEG CVE-2019-18958 · Other software · Gonitro · reported by MITREHigh 7.8

    Nitro Pro before 13.2 creates a debug.log file in the directory where a .pdf file is located, if the .pdf document was produced by an OCR operation on the JPEG output of a scanner. Reportedly, this can have a security risk if debug.log is later edited and then executed.

    Product
    Nitro Pro
    What to do
    Apply the vendor’s update. The NVD record links to the advisory.
  • Feb 8, 2018Nitro Pro 7.5.0.22 and earlier and Nitro Reader 2.5.0.36 and earlier allow remote attackers to execute arbitrary code via a crafted PDF file.CVE-2013-3553 · Other software · Nitropdf · reported by MITREHigh 7.8

    Nitro Pro 7.5.0.22 and earlier and Nitro Reader 2.5.0.36 and earlier allow remote attackers to execute arbitrary code via a crafted PDF file.

    Product
    Nitro Pro
    What to do
    Apply the vendor’s update. The NVD record links to the advisory.
  • Feb 8, 2018Nitro Pro 7.5.0.29 and earlier and Nitro Reader 2.5.0.45 and earlier allow remote attackers to execute arbitrary code via a crafted PDF file.CVE-2013-3552 · Other software · Nitropdf · reported by MITREHigh 7.8

    Nitro Pro 7.5.0.29 and earlier and Nitro Reader 2.5.0.45 and earlier allow remote attackers to execute arbitrary code via a crafted PDF file.

    Product
    Nitro Pro
    What to do
    Apply the vendor’s update. The NVD record links to the advisory.
  • Aug 3, 2017Nitro Pro 11.0.3.173 allows remote attackers to execute arbitrary code via saveAs and launchURL calls with directory traversal sequences.CVE-2017-7442 · Other software · Gonitro · reported by MITREHigh 8.8

    Nitro Pro 11.0.3.173 allows remote attackers to execute arbitrary code via saveAs and launchURL calls with directory traversal sequences.

    Product
    Nitro Pro
    What to do
    Apply the vendor’s update. The NVD record links to the advisory.
  • Jul 7, 2017Nitro Pro 11.0.3 and earlier allows remote attackers to cause a denial of service (application crash) via a crafted PCX file.CVE-2017-7950 · Other software · Gonitro · reported by MITREMedium 5.5

    Nitro Pro 11.0.3 and earlier allows remote attackers to cause a denial of service (application crash) via a crafted PCX file.

    Product
    Nitro Pro
    What to do
    Apply the vendor’s update. The NVD record links to the advisory.
  • Feb 10, 2017A remote out of bound write / memory corruption vulnerability exists in the PDF parsing functionality of Nitro Pro 10.5.9.9.CVE-2016-8713 · Other software · Nitro · reported by talos-cna@cisco.comHigh 7.8

    A remote out of bound write / memory corruption vulnerability exists in the PDF parsing functionality of Nitro Pro 10.5.9.9. A specially crafted PDF file can cause a vulnerability resulting in potential memory corruption. An attacker can send the victim a specific PDF file to trigger this vulnerability.

    Product
    Nitro Pro
    What to do
    Apply the vendor’s update. The NVD record links to the advisory.
  • Feb 10, 2017A potential remote code execution vulnerability exists in the PDF parsing functionality of Nitro Pro 10.CVE-2016-8711 · Other software · Nitro · reported by talos-cna@cisco.comHigh 7.8

    A potential remote code execution vulnerability exists in the PDF parsing functionality of Nitro Pro 10. A specially crafted PDF file can cause a vulnerability resulting in potential code execution. An attacker can send the victim a specific PDF file to trigger this vulnerability.

    Product
    Nitro Pro
    What to do
    Apply the vendor’s update. The NVD record links to the advisory.
  • Feb 10, 2017A remote out of bound write / memory corruption vulnerability exists in the PDF parsing functionality of Nitro Pro 10.CVE-2016-8709 · Other software · Nitro · reported by talos-cna@cisco.comHigh 7.8

    A remote out of bound write / memory corruption vulnerability exists in the PDF parsing functionality of Nitro Pro 10. A specially crafted PDF file can cause a vulnerability resulting in potential memory corruption. An attacker can send the victim a specific PDF file to trigger this vulnerability.

    Product
    Nitro Pro
    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.

Weekly security brief

The flaws that hit local websites, every Friday.

One short email: what got exploited this week, which WordPress plugins broke, and what to check. Unsubscribe in one click.

Get in touch

Tell us what you're building.

A website, your marketing, a security check, an app, or the thing you've been running out of a spreadsheet for three years. A few lines is plenty.

01The person who'll do the work writes back
02A short call, then a written plan with the price
03Nothing starts until you say yes
04Hacked or down right now? Call, and we pick up the same day
843-331-6339

Not ready to talk yet? Run the free website check and see what Google sees.

What do you need?
Build
Grow
Protect
Urgent

No newsletter, no sales sequence. Just a reply.