OOB Access in CefLayeredWindowUpdaterOSR::OnAllocatedSharedMemory
Priority MEDIUM 42CWE-125Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- High · None · High
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA.
Summary
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.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00699 53rd percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix No fix listed No fixed version in the sources yet
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| chromiumembedded | cef | < commit 1f55d2e | — | No fix listed | CNA |
- cef Vendorchromiumembedded Affected < commit 1f55d2e Fixed in — No fix listed CNA
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:chromiumembedded:chromium_embedded_framework:*:*:*:*:*:*:*:* | before 2024-01-05 | Vulnerable | chromiumembedded |
- cpe:2.3:a:chromiumembedded:chromium_embedded_framework:*:*:*:*:*:*:*:* Versions before 2024-01-05 Vulnerable ·chromiumembedded
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2024-21639
References
More chromiumembedded Chromium Embedded Framework vulnerabilities
- TI-2024-14365 OOB Access in CefVideoConsumerOSR::OnFrameCaptured CVSS 3.1CRITICAL 9.6
Sources
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences