CVE-2026-97631
Severity not reportedData quality: partial.
Some fields were not provided by the source.
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 remo…
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.
CVSS
—
Not reported by the source
Timeline (UTC)
Published: 2026-10-22 17:17
Modified: 2026-10-28 16:17
NVD status: Deferred
Last synced 12 hours ago
Verified against the source API 2026-10-28 16:34 UTC
Exploitation
Not listed in CISA KEV (as of last catalog sync)
Absence from KEV does not mean a CVE is not exploited. Exploitation status: unknown (no authoritative evidence in our sources).
Affected products
Not reported by the source (unknown — not "none").
Weakness classification (CWE)
Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.
Mitigation & advisories
No vendor advisory or patch reference tagged by NVD. Check the references below.
References
- https://github.com/tianocore/edk2/security/advisories/GHSA-99cj-7hg9-mp4m infosec@edk2.groups.io
- http://www.openwall.com/lists/oss-security/2026/10/28/4 af854a3a-2127-422b-91ae-364da2661108
- https://arstechnica.com/security/2026/10/code-execution-flaw-in-uefi-firmware-threatens-mo... af854a3a-2127-422b-91ae-364da2661108
- https://github.com/microsoft/mu_basecore/pull/1989 af854a3a-2127-422b-91ae-364da2661108
- https://github.com/microsoft/mu_basecore/pull/1990 af854a3a-2127-422b-91ae-364da2661108
- https://news.ycombinator.com/item?id=50265393 af854a3a-2127-422b-91ae-364da2661108
Data sources
NVD CVE API 2.0 — fetched 2026-10-28 16:34 UTC · record ↗