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CISA KEV · ACTIVELY EXPLOITED
HIGH severity

Use after free in AnimationGHSA-vv6j-ww6x-54gx

HIGH

GHSA-vv6j-ww6x-54gx is a high-severity (CVSS 8.8) Use After Free vulnerability in CefSharp.Common. It is in CISA's Known Exploited Vulnerabilities catalog (added 2022-02-15) — treat it as actively exploited and patch now. A fix is available for CefSharp.Common — see the affected versions and patch details below.

Also known asCVE-2022-0609
Published
Updated
Affected
9 pkgs
Patched
9 / 9
Exploits
3 known
Exploitation data as of Oct 23, 2026 · OSV.dev, NVD, CISA KEV, FIRST.org (EPSS)

Exploitation Status

Actively exploited in the wild

  • Confirmed by CISA's Known Exploited Vulnerabilities catalog on 2022-02-15. Federal agencies were required to remediate by 2022-03-01.
  • A successful exploit gives an attacker total control of the affected component, not partial access.

Exploitation and automatability from CISA (KEV catalog and SSVC triage) for GHSA-vv6j-ww6x-54gx.

EPSS Exploitation Probability

via FIRST.org ↗
22.4%probability of exploitation in next 30 days
Moderate Risk-0.49%
Lower risk than most CVEs98th percentile — riskier than 98% of all scored CVEsHighest risk
13.5%28.2%42.9%57.6%39.5%22.4%Apr 26Aug 26Oct 26

Probability of exploitation in the next 30 days, from FIRST.org EPSS.

How urgent is this, really

GHSA-vv6j-ww6x-54gx by exploitation likelihood (EPSS) against impact (CVSS). Outside the shaded patch-first corner.

Where this sits among everything scored

Of 395,249 CVEs with a current EPSS score, this one falls in the 10–50% band (highlighted). Counts from FIRST.org, log-scaled.

Real-World Exposure

9 pkgs affected
.NETCefSharp.Common.NETCefSharp.OffScreen.NETCefSharp.WinForms.NETCefSharp.Wpf.NETCefSharp.Wpf.HwndHost.NETCefSharp.Common.NETCore.NETCefSharp.OffScreen.NETCore.NETCefSharp.WinForms.NETCore+1 more

Real-time download stats are indexed for npm and PyPI packages. This vulnerability affects NuGet packages — download data is not available via public APIs for these ecosystems.

Description

CVE-2022-0609: Use after free in Animation

Google is aware of reports that exploits for CVE-2022-0609 exist in the wild.

The exploitation is known to be easy. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. It demands that the victim is doing some kind of user interaction. Technical details are unknown but an exploit is available.

There is currently little other public information on the issue other than it has been flagged as High severity.

Affected Packages

9 total 9 fixed
EcosystemPackageVulnerable rangeFix
.NETNuGetCefSharp.Commonall versions98.1.210dotnet add package CefSharp.Common --version 98.1.210
.NETNuGetCefSharp.OffScreenall versions98.1.210dotnet add package CefSharp.OffScreen --version 98.1.210
.NETNuGetCefSharp.WinFormsall versions98.1.210dotnet add package CefSharp.WinForms --version 98.1.210
.NETNuGetCefSharp.Wpfall versions98.1.210dotnet add package CefSharp.Wpf --version 98.1.210
.NETNuGetCefSharp.Wpf.HwndHostall versions98.1.210dotnet add package CefSharp.Wpf.HwndHost --version 98.1.210
.NETNuGetCefSharp.Common.NETCoreall versions98.1.210dotnet add package CefSharp.Common.NETCore --version 98.1.210

Affected Products

1 product · 1 configurations
Application
chromegoogle
< 98.0.4758.102
range
Exploits & PoCs
3

Research use only. For defensive security, authorized penetration testing, and academic research only. Never execute exploit code against systems without explicit written authorization.

Use after free in Animation in Google Chrome prior to 98.0.4758.102 allo…

chromereleases.googleblog.comChromeFeb 2022

Use after free in Animation in Google Chrome prior to 98.0.4758.102 allo…

chromereleases.googleblog.comGoogle-sheetFeb 2022

Use after free in Animation in Google Chrome prior to 98.0.4758.102 allo…

cisa.govCISAFeb 2022

Detection & mitigation playbook

Open-source dependency

  1. Detect

    Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for CefSharp.Common, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.

  2. Fix

    Update CefSharp.Common to 98.1.210 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-vv6j-ww6x-54gx is resolved across your whole dependency graph.

  3. Workarounds

    Constrain what reaches the vulnerable code: limit the size and shape of untrusted input, isolate the affected component in a sandboxed or least-privileged process, and enable the platform's memory-safety mitigations (ASLR, stack protector, hardened allocator) so an out-of-bounds access is more likely to fail closed than to be exploitable.

Frequently Asked Questions

CVE-2022-0609: Use after free in Animation - https://chromereleases.googleblog.com/2022/02/stable-channel-update-for-desktop_14.html - https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-0609 Google is aware of reports that exploits for CVE-2022-0609 exist in the wild. The exploitation is known to be easy. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. It demands that the victim is doing some kind of user interaction. Technical details are unknown but an exploit is available. There is currently little other public information on
O3 Security · Impact-Aware SCA

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Use after free in Animation (High 8.8)