CVE-2021-26404 | BDVDB-2026-192554 Detail

AMD3rd Gen EPYC

Description#

Improper input validation and bounds checking in SEV firmware may leak scratch buffer bytes leading to potential information disclosure.

Per CVSS v3.1: confidentiality impact high, integrity impact none, availability impact none. Attack vector: local.

No public exploit known

5.5 Medium

less than 1%, Very Low

Estimated chance of exploitation in the next 30 days. EPSS percentile: 8.7.

Not listed in the CISA Known Exploited Vulnerabilities catalog.

Improper Input Validation

No specific action is recorded in the source data. Check the references for vendor guidance.

Not available

5.5 Medium

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

Not available

Not available

Source: CVE List v5 (record); CISA KEV (kev, action); FIRST EPSS (epss).