CVE-2026-56373: imagemagick Use After Free
CVSS: 6.3v4.0MediumAnalyzed
AliasesUBUNTU-CVE-2026-56373DEBIAN-CVE-2026-56373GHSA-3j4x-rwrx-xxj9
Published 10-07-2026Last modified 10-07-2026
Vulnerability summary
CVE-2026-56373 is a medium (CVSS 6.3) Use After Free vulnerability in imagemagick. EPSS estimates a 0.23% chance of exploitation in the next 30 days, higher than 13% of scored vulnerabilities.
CVSS score
6.3/10
010
Medium · v4.0 (CVE.org)EPSS score
0.23%
0%100%
Low · 0.00 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded
Advisory lineage
Upstream 0 · Downstream 9 · Related 9Timeline
- 10-07-2026PublishedVulnerability first disclosed.
- 10-07-2026Last modifiedVulnerability information updated.
Description
ImageMagick before 7.1.2-15 contains a use-after-free vulnerability in the PDB decoder that uses a stale pointer when memory allocation fails. Attackers can trigger this vulnerability by processing malicious PDB files to cause crashes or write a single zero byte to freed memory.
CVSS metrics
8 scores · 5 sources · 2 versionsMedium 6.3Preferred score · CVE.org (CNA)
CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:NSourcesAll 3 agree
- OSV · UbuntuEcosystem advisory · calculated6.3MediumCVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N
- NVDNIST6.3MediumCVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Low 3.7Preferred score · CVE.org (CNA)
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:LSources5 sources · 3.7–5.3
- OSV · UbuntuEcosystem advisory · calculated5.3MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:LDiffers
- OSV · DebianEcosystem advisory · calculated5.3MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:LDiffers
- OSV · NugetEcosystem advisory · calculated3.7LowCVSS:3.1/AV:N/AC:H/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:LDiffers
EPSS trend
Probability
0.23%
Chance of exploitation in the next 30 days
Percentile
13%
Versus all other CVEs
30-day change
0.00 pp
From 0.23% on 20-09-2026
20-09-202620-10-2026
EPSS score0.23%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
NuGet19 products
- 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
Debian1 product
- imagemagick< 8:6.9.11.60+dfsg-1.6+deb12u12 | < 8:7.1.1.43+dfsg1-1+deb13u12 | < 8:7.1.2.15+dfsg1-1
Imagemagick1 product
- imagemagick< 7.1.2-15 | < 6.9.13-40 | ≥ 7.0.0-0, < 7.1.2-15
Ubuntu1 product
- imagemagick< 8:6.7.7.10-6ubuntu3.13+esm25 | < 8:6.8.9.9-7ubuntu5.16+esm24 | < 8:6.9.7.4+dfsg-16ubuntu6.15+esm16 | < 8:6.9.10.23+dfsg-2.1ubuntu11.11+esm14 | < 8:6.9.11.60+dfsg-1.3ubuntu0.22.04.5+esm14 | < 8:6.9.12.98+dfsg1-5.2ubuntu0.1~esm13
4 vendors · 22 products
References
10 links- www.vulncheck.com/advisories/imagemagick-use-after-free-write-in-pdb-decoderThird Party AdvisoryREPORT
