CVE-2025-57803
ImageMagick (WriteBMPImage): 32-bit integer overflow when writing BMP scanline stride → heap buffer overflow
Description
ImageMagick is free and open-source software used for editing and manipulating digital images. Prior to versions 6.9.13-28 and 7.1.2-2 for ImageMagick's 32-bit build, a 32-bit integer overflow in the BMP encoder’s scanline-stride computation collapses bytes_per_line (stride) to a tiny value while the per-row writer still emits 3 × width bytes for 24-bpp images. The row base pointer advances using the (overflowed) stride, so the first row immediately writes past its slot and into adjacent heap memory with attacker-controlled bytes. This is a classic, powerful primitive for heap corruption in common auto-convert pipelines. This issue has been patched in versions 6.9.13-28 and 7.1.2-2.
How to fix CVE-2025-57803
To remediate CVE-2025-57803, upgrade the affected package to a fixed version below.
- —upgrade to 8:6.9.11.60+dfsg-1.3+deb11u6 or later
- —upgrade to 14.8.1 or later
- —upgrade to 14.8.1 or later
- —upgrade to 14.8.1 or later
- —upgrade to 14.8.1 or later
- —upgrade to 14.8.1 or later
- —upgrade to 14.8.1 or later
Is CVE-2025-57803 being exploited?
Low — EPSS is 0.1%, meaning exploitation activity has not been observed at scale.
Affected packages (7)
- from 0, < 8:6.9.11.60+dfsg-1.3+deb11u6
- from 0, < 14.8.1
- from 0, < 14.8.1
- from 0, < 14.8.1
- from 0, < 14.8.1
- from 0, < 14.8.1
- from 0, < 14.8.1
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH7.5 | CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H |