VDB
DEBIAN-CVE-2021-3697
DEBIAN-CVE-2021-3697
PUBLISHED
CVSS 7 HIGH
A crafted JPEG image may lead the JPEG reader to underflow its data pointer, allowing user-controlled data to be written in heap. To a successful to be performed the attacker needs to perform some triage over the heap layout and craft an image with a malicious format and payload. This vulnerability can lead to data corruption and eventual code execution or secure boot circumvention. This flaw affects grub2 versions prior grub-2.12.
Risk Scores
CVSS 3.1
7
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Debian:14 | grub2 | 0, 0, 0 |
| Debian:12 | grub2 | 0, 0, 0 |
| Debian:13 | grub2 | 0, 0, 0 |
| Debian:11 | grub2 | 2.06-2, 2.06-2, 2.06-2 |
Timeline
- Jul 6, 2022 CVE Published
- Apr 28, 2026 CVE Updated