ImageMagick has heap buffer overflow in YUV 4:2:2 decoder

CVE-2026-25986 → View on GitHub ↗ View on CVE.org ↗ View on NVD ↗

Description

A heap buffer overflow write vulnerability exists in ReadYUVImage() (coders/yuv.c) when processing malicious YUV 4:2:2 (NoInterlace) images. The pixel-pair loop writes one pixel beyond the allocated row buffer.

=================================================================
==204642==ERROR: AddressSanitizer: heap-buffer-overflow on address 0x5170000002e0 at pc 0x562d21a7e8de bp 0x7fffa9ae1270 sp 0x7fffa9ae1260
WRITE of size 8 at 0x5170000002e0 thread T0

Basic information

Type
reviewed
Severity
medium
Advisory on GitHub
Open advisory ↗
Repository advisory
Open repository advisory ↗
Source code
Browse source ↗
Published (advisory)
2026-03-12 14:02:35 UTC
Updated
2026-03-12 14:02:38 UTC
GitHub reviewed
2026-03-12 14:02:35 UTC
NVD published
2026-02-23

EPSS Score

Score Percentile
0.03% 7.18%

CVSS Scores

Base score Version Severity Vector
5.3 3.1 —
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:N)
Doesn’t really leak secrets in a meaningful way.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:L)
Might cause slowdowns, glitches, or partial disruption—not a full brick.

Identifiers

Type Value
GHSA GHSA-mqfc-82jx-3mr2 ↗
CVE CVE-2026-25986 ↗

CWEs

CWE id Name
CWE-787 Out-of-bounds Write

Credits

  • ylwango613 (reporter)

Affected packages (19)

Vulnerable version ranges and first patched releases as published by GitHub.

Ecosystem Package Vulnerable range First patched Vulnerable functions
nuget Magick.NET-Q16-AnyCPU < 14.10.3 14.10.3 —
nuget Magick.NET-Q16-HDRI-AnyCPU < 14.10.3 14.10.3 —
nuget Magick.NET-Q16-HDRI-OpenMP-arm64 < 14.10.3 14.10.3 —
nuget Magick.NET-Q16-HDRI-arm64 < 14.10.3 14.10.3 —
nuget Magick.NET-Q16-HDRI-x64 < 14.10.3 14.10.3 —
nuget Magick.NET-Q16-HDRI-x86 < 14.10.3 14.10.3 —
nuget Magick.NET-Q16-OpenMP-arm64 < 14.10.3 14.10.3 —
nuget Magick.NET-Q16-OpenMP-x64 < 14.10.3 14.10.3 —
nuget Magick.NET-Q16-OpenMP-x86 < 14.10.3 14.10.3 —
nuget Magick.NET-Q16-arm64 < 14.10.3 14.10.3 —
nuget Magick.NET-Q16-x64 < 14.10.3 14.10.3 —
nuget Magick.NET-Q16-x86 < 14.10.3 14.10.3 —
nuget Magick.NET-Q16-HDRI-OpenMP-x64 < 14.10.3 14.10.3 —
nuget Magick.NET-Q8-AnyCPU < 14.10.3 14.10.3 —
nuget Magick.NET-Q8-OpenMP-arm64 < 14.10.3 14.10.3 —
nuget Magick.NET-Q8-OpenMP-x64 < 14.10.3 14.10.3 —
nuget Magick.NET-Q8-arm64 < 14.10.3 14.10.3 —
nuget Magick.NET-Q8-x64 < 14.10.3 14.10.3 —
nuget Magick.NET-Q8-x86 < 14.10.3 14.10.3 —

References

cvelogic Threat Intelligence