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CVE-2021-21870

A use-after-free vulnerability exists in the JavaScript engine of Foxit Software’s PDF Reader, version 10.1.4.37651. A specially crafted PDF document can trigger the reuse of previously free memory, which can lead to arbitrary code execution. An attacker needs to trick the user into opening a malicious file or site to trigger this vulnerability if the browser plugin extension is enabled.

CVSS 3.1 · 8.8 High EPSS 1.9% KEV · Not listed
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CVE-2021-21831

A use-after-free vulnerability exists in the JavaScript engine of Foxit Software’s PDF Reader, version 10.1.3.37598. A specially crafted PDF document can trigger the reuse of previously freed memory, which can lead to arbitrary code execution. An attacker needs to trick the user to open the malicious file to trigger this vulnerability. Exploitation is also possible if a user visits a specially crafted, malicious site if the browser plugin extension is enabled.

CVSS 3.1 · 8.8 High EPSS 6.1% KEV · Not listed
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CVE-2021-21822

A use-after-free vulnerability exists in the JavaScript engine of Foxit Software’s PDF Reader, version 10.1.3.37598. A specially crafted PDF document can trigger the reuse of previously free memory, which can lead to arbitrary code execution. An attacker needs to trick the user into opening a malicious file or site to trigger this vulnerability if the browser plugin extension is enabled.

CVSS 3.1 · 8.8 High EPSS 1.8% KEV · Not listed
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CVE-2021-21806

webkitgtk: Use-after-free in fireEventListeners leading to arbitrary code execution

An exploitable use-after-free vulnerability exists in WebKitGTK browser version 2.30.3 x64. A specially crafted HTML web page can cause a use-after-free condition, resulting in remote code execution. The victim needs to visit a malicious web site to trigger the vulnerability.

CVSS 3.1 · 8.8 High EPSS 2.8% KEV · Not listed
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CVE-2021-21796

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.

CVSS 3.1 · 7.8 High EPSS 15.8% KEV · Not listed
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CVE-2021-21779

webkitgtk: Use-after-free in WebCore::GraphicsContext leading to information leak and possibly code execution

A use-after-free vulnerability exists in the way Webkit’s GraphicsContext handles certain events in WebKitGTK 2.30.4. A specially crafted web page can lead to a potential information leak and further memory corruption. A victim must be tricked into visiting a malicious web page to trigger this vulnerability.

CVSS 3.1 · 8.8 High EPSS 2.9% KEV · Not listed
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CVE-2021-21775

webkitgtk: Use-after-free in ImageLoader dispatchPendingErrorEvent leading to information leak and possibly code execution

A use-after-free vulnerability exists in the way certain events are processed for ImageLoader objects of Webkit WebKitGTK 2.30.4. A specially crafted web page can lead to a potential information leak and further memory corruption. In order to trigger the vulnerability, a victim must be tricked into visiting a malicious webpage.

CVSS 3.1 · 8.0 High EPSS 1.3% KEV · Not listed
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CVE-2021-21772

A use-after-free vulnerability exists in the NMR::COpcPackageReader::releaseZIP() functionality of 3MF Consortium lib3mf 2.0.0. A specially crafted 3MF file can lead to code execution. An attacker can provide a malicious file to trigger this vulnerability.

CVSS 3.1 · 8.1 High EPSS 4.2% KEV · Not listed
CVE-2021-21708

UAF due to php_filter_float() failing

In PHP versions 7.4.x below 7.4.28, 8.0.x below 8.0.16, and 8.1.x below 8.1.3, when using filter functions with FILTER_VALIDATE_FLOAT filter and min/max limits, if the filter fails, there is a possibility to trigger use of allocated memory after free, which can result it crashes, and potentially in overwrite of other memory chunks and RCE. This issue affects: code that uses FILTER_VALIDATE_FLOAT with min/max limits.

CVSS 3.1 · 8.2 High EPSS 3.0% KEV · Not listed
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CVE-2021-21417

Use after free in fluidsynth

fluidsynth is a software synthesizer based on the SoundFont 2 specifications. A use after free violation was discovered in fluidsynth, that can be triggered when loading an invalid SoundFont file.

CVSS 3.1 · 7.2 High EPSS < 1% KEV · Not listed
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CVE-2021-21226

Use after free in navigation in Google Chrome prior to 90.0.4430.85 allowed a remote attacker who had compromised the renderer process to potentially perform a sandbox escape via a crafted HTML page.

CVSS 3.1 · 9.6 Critical EPSS 1.4% KEV · Not listed
CVE-2021-21207

Use after free in IndexedDB in Google Chrome prior to 90.0.4430.72 allowed an attacker who convinced a user to install a malicious extension to potentially perform a sandbox escape via a crafted Chrome Extension.

CVSS 3.1 · 8.6 High EPSS < 1% KEV · Not listed
CVE-2021-21202

Use after free in extensions in Google Chrome prior to 90.0.4430.72 allowed an attacker who convinced a user to install a malicious extension to potentially perform a sandbox escape via a crafted Chrome Extension.

CVSS 3.1 · 8.6 High EPSS 1.0% KEV · Not listed
CVE-2021-21201

Use after free in permissions in Google Chrome prior to 90.0.4430.72 allowed a remote attacker who had compromised the renderer process to potentially perform a sandbox escape via a crafted HTML page.

CVSS 3.1 · 9.6 Critical EPSS 1.7% KEV · Not listed
CVE-2021-21199

Use after free in Aura in Google Chrome on Linux prior to 89.0.4389.114 allowed a remote attacker who had compromised the renderer process to potentially exploit heap corruption via a crafted HTML page.

CVSS 3.1 · 8.8 High EPSS 1.1% KEV · Not listed
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