🛡️ CVE-2026-27798 — imagemagick
Description
ImageMagick: Heap Buffer Over-read in WaveletDenoise when processing small images
A heap buffer over-read vulnerability occurs when processing an image with small dimension using the -wavelet-denoise operator.
```
==3693336==ERROR: AddressSanitizer: heap-buffer-overflow on address 0x511000001280 at pc 0x5602c8b0cc75 bp 0x7ffcb105d510 sp 0x7ffcb105d500
READ of size 4 at 0x511000001280 thread T0
```
How this vulnerability can be exploited
This issue can be reached with local access to the system, attack complexity is low, an attacker needs no privileges on the target. No user interaction is required. The scope is unchanged, so the impact stays within the vulnerable component. Rated impact: confidentiality low, integrity none, availability none.
Weakness class
CVE-2026-27798 is classified as CWE-125: Out-of-bounds Read. The code reads past the limits of a buffer, exposing adjacent memory contents or crashing the process.
Affected software
CVE-2026-27798 is recorded against 21 packages.
- imagemagick (from 7.0.0-0 up to 7.1.2-15)
- magick.net (fixed in 14.10.3)
- magick.net-q16-anycpu (fixed in 14.10.3)
- magick.net-q16-arm64 (fixed in 14.10.3)
- magick.net-q16-hdri-anycpu (fixed in 14.10.3)
- magick.net-q16-hdri-arm64 (fixed in 14.10.3)
- magick.net-q16-hdri-openmp-arm64 (fixed in 14.10.3)
- magick.net-q16-hdri-openmp-x64 (fixed in 14.10.3)
- magick.net-q16-hdri-x64 (fixed in 14.10.3)
- magick.net-q16-hdri-x86 (fixed in 14.10.3)
- magick.net-q16-openmp-arm64 (fixed in 14.10.3)
- magick.net-q16-openmp-x64 (fixed in 14.10.3)
- magick.net-q16-openmp-x86 (fixed in 14.10.3)
- magick.net-q16-x64 (fixed in 14.10.3)
- magick.net-q16-x86 (fixed in 14.10.3)
- magick.net-q8-anycpu (fixed in 14.10.3)
- magick.net-q8-arm64 (fixed in 14.10.3)
- magick.net-q8-openmp-arm64 (fixed in 14.10.3)
- magick.net-q8-openmp-x64 (fixed in 14.10.3)
- magick.net-q8-x64 (fixed in 14.10.3)
- magick.net-q8-x86 (fixed in 14.10.3)
Timeline and source
Published on 26 February 2026 and last revised on 17 June 2026. No public exploit is currently recorded for this entry. A vendor advisory or fix has been published. Record sourced from NVD.
References
CVE-2026-27798 on other distributions
Each distribution ships its own build and its own fixed version. Pick the one you run:
Details
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Affected Packages
| Software | From version | Fixed in |
|---|---|---|
| imagemagick | 7.0.0-0 | 7.1.2-15 |
| magick.net | — | 14.10.3 |
| magick.net-q16-anycpu | — | 14.10.3 |
| magick.net-q16-arm64 | — | 14.10.3 |
| magick.net-q16-hdri-anycpu | — | 14.10.3 |
| magick.net-q16-hdri-arm64 | — | 14.10.3 |
| magick.net-q16-hdri-openmp-arm64 | — | 14.10.3 |
| magick.net-q16-hdri-openmp-x64 | — | 14.10.3 |
| magick.net-q16-hdri-x64 | — | 14.10.3 |
| magick.net-q16-hdri-x86 | — | 14.10.3 |
| magick.net-q16-openmp-arm64 | — | 14.10.3 |
| magick.net-q16-openmp-x64 | — | 14.10.3 |
| magick.net-q16-openmp-x86 | — | 14.10.3 |
| magick.net-q16-x64 | — | 14.10.3 |
| magick.net-q16-x86 | — | 14.10.3 |
| magick.net-q8-anycpu | — | 14.10.3 |
| magick.net-q8-arm64 | — | 14.10.3 |
| magick.net-q8-openmp-arm64 | — | 14.10.3 |
| magick.net-q8-openmp-x64 | — | 14.10.3 |
| magick.net-q8-x64 | — | 14.10.3 |
| magick.net-q8-x86 | — | 14.10.3 |
References
Similar Threats
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More CVE 2026 advisories
Browse all of CVE 2026 in the advisory index.
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