CVE-2024-56738 | BDVDB-2026-260548 Detail

GNUGRUB2

Description#

GNU GRUB (aka GRUB2) through 2.12 does not use a constant-time algorithm for grub_crypto_memcmp and thus allows side-channel attacks.

Per CVSS v3.1: confidentiality impact low, integrity impact none, availability impact none. Attack vector: network.

No public exploit known

5.3 Medium

less than 1%, Very Low

Estimated chance of exploitation in the next 30 days. EPSS percentile: 35.0.

Not listed in the CISA Known Exploited Vulnerabilities catalog.

Not classified

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

Not available

5.3 Medium

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

Not available

Not available

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