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Vulnerability details: VCID-4nh7-1xks-pbhd
Vulnerability ID VCID-4nh7-1xks-pbhd
Aliases CVE-2026-25794
GHSA-vhqj-f5cj-9x8h
Summary ImageMagick has heap-buffer-overflow via signed integer overflow in WriteUHDRImage when writing UHDR images with large dimensions `WriteUHDRImage` in `coders/uhdr.c` uses `int` arithmetic to compute the pixel buffer size. When image dimensions are large, the multiplication overflows 32-bit `int`, causing an undersized heap allocation followed by an out-of-bounds write. This can crash the process or potentially lead to an out of bounds heap write. ``` ==1575126==ERROR: AddressSanitizer: heap-buffer-overflow on address 0x7fc382ef3820 at pc 0x5560d31f229f bp 0x7ffe865f9530 sp 0x7ffe865f9520 WRITE of size 8 at 0x7fc382ef3820 thread T0
Status Published
Exploitability None
Weighted Severity None
Risk None
Affected and Fixed Packages Package Details
Weaknesses (4)
CWE-122 Heap-based Buffer Overflow
CWE-190 Integer Overflow or Wraparound
CWE-937 OWASP Top Ten 2013 Category A9 - Using Components with Known Vulnerabilities
CWE-1035 OWASP Top Ten 2017 Category A9 - Using Components with Known Vulnerabilities
System Score Found at
epss 0.00019 https://api.first.org/data/v1/epss?cve=CVE-2026-25794
cvssv3.1_qr HIGH https://github.com/advisories/GHSA-vhqj-f5cj-9x8h
cvssv3.1_qr HIGH https://github.com/ImageMagick/ImageMagick/security/advisories/GHSA-vhqj-f5cj-9x8h
Reference id Reference type URL
https://api.first.org/data/v1/epss?cve=CVE-2026-25794
https://github.com/dlemstra/Magick.NET/releases/tag/14.10.3
https://github.com/ImageMagick/ImageMagick
https://github.com/ImageMagick/ImageMagick/commit/ffe589df5ff8ce1433daa4ccb0d2a9fadfbe30ed
CVE-2026-25794 https://nvd.nist.gov/vuln/detail/CVE-2026-25794
GHSA-vhqj-f5cj-9x8h https://github.com/advisories/GHSA-vhqj-f5cj-9x8h
GHSA-vhqj-f5cj-9x8h https://github.com/ImageMagick/ImageMagick/security/advisories/GHSA-vhqj-f5cj-9x8h
No exploits are available.
Exploit Prediction Scoring System (EPSS)
Percentile 0.05679
EPSS Score 0.00019
Published At May 30, 2026, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2026-05-30T21:06:49.510123+00:00 GitLab Importer Import https://gitlab.com/gitlab-org/advisories-community/-/blob/main/nuget/Magick.NET-Q8-x86/CVE-2026-25794.yml 38.6.0