CVE-2026-97631

critical · 9.5

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.

9.5

CVSS

0.4%

EPSS (exploit prob.)

37th

EPSS percentile

2026-10-22

Published

CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Weaknesses

CWE-120CWE-131CWE-787

References

https://github.com/tianocore/edk2/security/advisories/GHSA-99cj-7hg9-mp4m

Query this programmatically:

curl https://evil-db.io/api/v1/cve/CVE-2026-97631