CVE-2026-33536: imagemagick Stack-based Buffer Overflow
Vulnerability summary
CVE-2026-33536 is a medium (CVSS 5.1) Stack-based Buffer Overflow vulnerability in imagemagick. EPSS estimates a 0.13% chance of exploitation in the next 30 days, higher than 2.1% of scored vulnerabilities.
Advisory lineage
Upstream 0 · Downstream 7 · Related 8Timeline
- 26-03-2026PublishedVulnerability first disclosed.
- 27-03-2026Last modifiedVulnerability information updated.
Description
ImageMagick is free and open-source software used for editing and manipulating digital images. Prior to 7.1.2-18 and 6.9.13-43, due to an incorrect return value on certain platforms a pointer is incremented past the end of a buffer that is on the stack and that could result in an out of bounds write. Versions 7.1.2-18 and 6.9.13-43 patch the issue.
CVSS metrics
6 scores · 6 sources · 1 version- OSV · UbuntuEcosystem advisory · calculated4.7MediumCVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:HDiffers
- OSV · DebianEcosystem advisory · calculated4.7MediumCVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:HDiffers
- OSV · ChainguardEcosystem advisory · calculated5.1MediumCVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
- OSV · NugetEcosystem advisory · calculated5.1MediumCVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
- NVDNIST4.7MediumCVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:HDiffers
EPSS trend
Probability
0.13%
Chance of exploitation in the next 30 days
Percentile
2%
Versus all other CVEs
30-day change
0.00 pp
From 0.13% 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-121Stack-based Buffer OverflowA stack-based buffer overflow condition is a condition where the buffer being overwritten is allocated on the stack (i.e., is a local variable or, rarely, a parameter to a function).
- 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< 14.11.1
- Magick.NET-Q16-arm64< 14.11.1
- magick.net-q16-hdri-anycpu< 14.11.1
- Magick.NET-Q16-HDRI-arm64< 14.11.1
- Magick.NET-Q16-HDRI-OpenMP-arm64< 14.11.1
Chainguard1 product
- imagemagick-6< 6.9.13.43-r0
Debian1 product
- imagemagick< 8:6.9.11.60+dfsg-1.6+deb12u8 | < 8:7.1.1.43+dfsg1-1+deb13u8 | < 8:7.1.2.18+dfsg1-1
Imagemagick1 product
- imagemagick< 7.1.2-18 | < 6.9.13-43 | ≥ 7.0.0-0, < 7.1.2-18
Ubuntu1 product
- imagemagick< 8:6.7.7.10-6ubuntu3.13+esm26 | < 8:6.8.9.9-7ubuntu5.16+esm25 | < 8:6.9.7.4+dfsg-16ubuntu6.15+esm17 | < 8:6.9.10.23+dfsg-2.1ubuntu11.11+esm15 | < 8:6.9.11.60+dfsg-1.3ubuntu0.22.04.5+esm15 | < 8:6.9.12.98+dfsg1-5.2ubuntu0.1~esm14 | All versions (No fix recorded)
5 vendors · 21 products
References
8 links- github.com/ImageMagick/ImageMagick/security/advisories/GHSA-8793-7xv6-82cfX Refsource CONFIRMREPORTAdvisoryWEBVendor Advisory
