CVE-2025-57807

ImageMagick is free and open-source software used for editing and manipulating digital images. ImageMagick versions lower than 14.8.2 include insecure functions: SeekBlob(), which permits advancing the stream offset beyond the current end without increasing capacity, and WriteBlob(), which then expands by quantum + length (amortized) instead of offset + length, and copies to data + offset. When offset ≫ extent, the copy targets memory beyond the allocation, producing a deterministic heap write on 64-bit builds. No 2⁶⁴ arithmetic wrap, external delegates, or policy settings are required. This is fixed in version 14.8.2.

CVSS 3.1

9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS

0.3% chance of exploitation in the next 30 days; higher than 21% of CVEs (scores of 2026-10-25)

CWEs

CWE-122, CWE-131, CWE-787

Published

2025-09-05

Modified

2026-10-19

Record from

the NVD, synced 2026-10-19

Affected

• imagemagick:imagemagick

References

• https://github.com/ImageMagick/ImageMagick/commit/077a417a19a5ea8c85559b602754a5b928eef23e
• https://github.com/ImageMagick/ImageMagick/security/advisories/GHSA-23hg-53q6-hqfg
• https://lists.debian.org/debian-lts-announce/2025/09/msg00012.html
• https://github.com/ImageMagick/ImageMagick/security/advisories/GHSA-23hg-53q6-hqfg

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