CVE-2026-33899: imagemagick Heap-based Buffer Overflow
CVSS: 5.3v3.1MediumAnalyzed
AliasesUBUNTU-CVE-2026-33899DEBIAN-CVE-2026-33899GHSA-cr67-pvmx-2pp2
Published 13-04-2026Last modified 16-04-2026
Vulnerability summary
CVE-2026-33899 is a medium (CVSS 5.3) Heap-based Buffer Overflow vulnerability in imagemagick. EPSS estimates a 0.52% chance of exploitation in the next 30 days, higher than 43.2% of scored vulnerabilities.
CVSS score
5.3/10
010
Medium · v3.1 (CVE.org)EPSS score
0.52%
0%100%
Low · +0.10 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded
Advisory lineage
Upstream 0 · Downstream 6 · Related 6Timeline
- 13-04-2026PublishedVulnerability first disclosed.
- 16-04-2026Last modifiedVulnerability information updated.
Description
ImageMagick is free and open-source software used for editing and manipulating digital images. In versions below 7.1.2-189 and 6.9.13-44, when `Magick` parses an XML file it is possible that a single zero byte is written out of the bounds. This issue has been fixed in versions 6.9.13-44 and 7.1.2-19.
CVSS metrics
5 scores · 5 sources · 1 versionMedium 5.3Preferred score · CVE.org (CNA)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:LSourcesAll 5 agree
- OSV · UbuntuEcosystem advisory · calculated5.3MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
- OSV · DebianEcosystem advisory · calculated5.3MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
- OSV · NugetEcosystem advisory · calculated5.3MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
- NVDNIST5.3MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
EPSS trend
Probability
0.52%
Chance of exploitation in the next 30 days
Percentile
43%
Versus all other CVEs
30-day change
+0.10 pp
From 0.43% on 19-09-2026
19-09-202619-10-2026
EPSS score0.52%
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-191Integer Underflow (Wrap or Wraparound)The product subtracts one value from another, such that the result is less than the minimum allowable integer value, which produces a value that is not equal to the correct result.
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
11 links- github.com/ImageMagick/ImageMagick/security/advisories/GHSA-cr67-pvmx-2pp2X Refsource CONFIRMREPORTWEBVendor Advisory
- github.com/ImageMagick/ImageMagick/commit/ae679e2fd19ec656bfab9f822ae4cf06bf91604dX Refsource MISCREPORTWEBPatch
