Vulnerability Description
EDK2 contains a vulnerability in BIOS where a user may cause “Out-of-bounds Write”, Classic Buffer Overflow, and “Incorrect Calculation of Buffer Size” by remote access. Successful exploitation of this vulnerability can lead to arbitrary code execution. It could also impact Confidentiality, Integrity, and Availability.
Related Weaknesses (CWE)
References
- https://github.com/tianocore/edk2/security/advisories/GHSA-99cj-7hg9-mp4m
- http://www.openwall.com/lists/oss-security/2026/10/28/4
- https://arstechnica.com/security/2026/10/code-execution-flaw-in-uefi-firmware-th
- https://github.com/microsoft/mu_basecore/pull/1989
- https://github.com/microsoft/mu_basecore/pull/1990
- https://news.ycombinator.com/item?id=50265393
FAQ
What is CVE-2026-97631?
CVE-2026-97631 is a documented vulnerability. EDK2 contains a vulnerability in BIOS where a user may cause “Out-of-bounds Write”, Classic Buffer Overflow, and “Incorrect Calculation of Buffer Size” by remote access. Successful exploitation of thi...
How severe is CVE-2026-97631?
CVSS scoring is not yet available for CVE-2026-97631. Check NVD for updates.
Is there a patch for CVE-2026-97631?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.