CVE-2026-33901: imagemagick Heap-based Buffer Overflow
Vulnerability summary
CVE-2026-33901 is a high (CVSS 7.5) Heap-based Buffer Overflow vulnerability in imagemagick. EPSS estimates a 0.74% chance of exploitation in the next 30 days, higher than 53.7% of scored vulnerabilities.
Advisory lineage
Upstream 0 · Downstream 5 · Related 5Timeline
- 13-04-2026PublishedVulnerability first disclosed.
- 15-07-2026Last modifiedVulnerability information updated.
Description
ImageMagick is free and open-source software used for editing and manipulating digital images. In versions below both 7.1.2-19 and 6.9.13-44, a heap buffer overflow occurs in the MVG decoder that could result in an out of bounds write when processing a crafted image. This issue has been fixed in versions 6.9.13-44 and 7.1.2-19.
CVSS metrics
5 scores · 5 sources · 1 version- OSV · UbuntuEcosystem advisory · calculated7.5HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- OSV · DebianEcosystem advisory · calculated7.5HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- OSV · NugetEcosystem advisory · calculated7.5HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- NVDNIST7.5HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS trend
Probability
0.74%
Chance of exploitation in the next 30 days
Percentile
54%
Versus all other CVEs
30-day change
+0.17 pp
From 0.57% on 19-09-2026
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root cause- CWE-122Heap-based Buffer OverflowA heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the buffer was allocated using a routine such as malloc().
- CWE-787Out-of-bounds WriteThe product writes data past the end, or before the beginning, of the intended buffer.
Affected systems
NuGet17 products
- magick.net-q16-anycpu< 14.12.0
- Magick.NET-Q16-arm64< 14.12.0
- magick.net-q16-hdri-anycpu< 14.12.0
- Magick.NET-Q16-HDRI-arm64< 14.12.0
- Magick.NET-Q16-HDRI-OpenMP-arm64< 14.12.0
Debian1 product
- imagemagick< 8:6.9.11.60+dfsg-1.6+deb12u9 | < 8:7.1.1.43+dfsg1-1+deb13u8 | < 8:7.1.2.19+dfsg1-1
Imagemagick1 product
- imagemagick< 7.1.2-19 | < 6.9.13-44 | ≥ 7.0.0-0, < 7.1.2-19
Ubuntu1 product
- imagemagickAll versions (No fix recorded)
4 vendors · 20 products
References
13 links- github.com/ImageMagick/ImageMagick/security/advisories/GHSA-x9h5-r9v2-vcwwX Refsource CONFIRMREPORTWEBVendor Advisory
- github.com/ImageMagick/ImageMagick/commit/4c72003e9e54a4ebaa938d239e75f5d285527ebeX Refsource MISCREPORTWEBPatch
