CVE-2024-21639

CriticalCVSS 9.6/10Last modified Jun 17, 2026

Description

CEF (Chromium Embedded Framework ) is a simple framework for embedding Chromium-based browsers in other applications. `CefLayeredWindowUpdaterOSR::OnAllocatedSharedMemory` does not check the size of the shared memory, which leads to out-of-bounds read outside the sandbox. This vulnerability was patched in commit 1f55d2e.

Metrics

CVSS 3.1 9.6/10CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:H

Weakness enumeration

CWE-125

Affected software

Vendor	Product	Versions
chromiumembedded	cef	< commit 1f55d2e
chromiumembedded	chromium_embedded_framework	-

References

https://github.com/chromiumembedded/cef/commit/1f55d2e12f62cfdfbf9da6968fde2f928982670bPatch
https://github.com/chromiumembedded/cef/security/advisories/GHSA-m375-jw5x-x8mgExploit, Vendor Advisory
https://github.com/chromiumembedded/cef/commit/1f55d2e12f62cfdfbf9da6968fde2f928982670bPatch
https://github.com/chromiumembedded/cef/security/advisories/GHSA-m375-jw5x-x8mgExploit, Vendor Advisory

Timeline

Published: Jan 12, 2024
Last modified: Jun 17, 2026
NVD status: Modified

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