CVE-2024-21640: Chromiumembedded Chromium Embedded Framework

Critical severity, CVSS 9.6. EPSS: 0.6% chance of exploitation in the next 30 days.

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

Affected products

• Chromiumembedded Chromium Embedded Framework: before 2024-01-05 (fixed in 2024-01-05)

Published 2024-01-13. Last modified 2026-06-17.