CVE-2022-3775
CVE-2022-3775
Vexday Risk Score
21Low
SSVC decision (CISA)
Track
No exploitation signal → monitor
CVSS 7.1EPSS 0.9%KEV nãoPoC —Nuclei —Metasploit —Patch referenciado
Lifecycle
19 Dec 2022Published on NVD
Recommendation: Monitor — no exploitation signal at the moment.
When rendering certain unicode sequences, grub2's font code doesn't proper validate if the informed glyph's width and height is constrained within bitmap size. As consequence an attacker can craft an input which will lead to a out-of-bounds write into grub2's heap, leading to memory corruption and availability issues. Although complex, arbitrary code execution could not be discarded.
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H
Affected products
n/a · grub2