CVE-2026-97631

criticalpriority · track · 0
grimoire priorityP2 · Scheduled
Exploitable?
—
no known exploitation
Likely / severe?
— EPSS
CVSS 9.5 · critical
Is it mine?
0 products
Check your exposure
Who says so?
— sources

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.

01

cvss

Technical severity, 0–10. One row per scoring source.

9.5
010

base score 0–10 · higher = more severe · hover a vector to decode

v4.09.5criticalCVSS: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:Xsecondary · infosec@edk2.groups.io
02

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-120USCWE-131USCWE-787US
03

affected products

Products and version ranges known to be affected.

No affected products recorded.

04

sources

Which sources assert this record, and when.

NVDCVE.orgMITRE
published 2026-10-22modified 2026-10-22
05

references (1) nvd

External citations — patches, advisories, analysis.

scry

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