CVE-2023-34440

Severity: high (CVSS 7.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.3% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2025-02-12 · updated 2026-06-17
Weakness: CWE-20

Description

Improper input validation in UEFI firmware for some Intel(R) Processors may allow a privileged user to potentially enable escalation of privilege via local access.

Affected products

Intel(R) Processors: See references

References

https://intel.com/content/www/us/en/security-center/advisory/intel-sa-01139.html
https://lists.debian.org/debian-lts-announce/2025/03/msg00021.html

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