CVE-2022-28735
7.8
HIGH
CVSS 3.1
EPSS 0.02%
Description
The GRUB2's shim_lock verifier allows non-kernel files to be loaded on shim-powered secure boot systems. Allowing such files to be loaded may lead to unverified code and modules to be loaded in GRUB2 breaking the secure boot trust-chain.
How to fix CVE-2022-28735
To remediate CVE-2022-28735, upgrade the affected package to a fixed version below.
- Debian/grub2—upgrade to 2.06-3~deb11u1 or later
Is CVE-2022-28735 being exploited?
Low — EPSS is 0.0%, meaning exploitation activity has not been observed at scale.
Affected packages (1)
- from 0, < 2.06-3~deb11u1
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH7.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |