CVE-2026-56362: imagemagick Out-of-bounds Read
CVSS: 4.2v3.1MediumAnalyzed
AliasesUBUNTU-CVE-2026-56362DEBIAN-CVE-2026-56362GHSA-gq5v-qf8q-fp77
Published 08-07-2026Last modified 08-07-2026
Vulnerability summary
CVE-2026-56362 is a medium (CVSS 4.2) Out-of-bounds Read vulnerability in imagemagick. EPSS estimates a 0.19% chance of exploitation in the next 30 days, higher than 8% of scored vulnerabilities.
CVSS score
4.2/10
010
Medium · v3.1 (NVD)EPSS score
0.19%
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 7 · Related 7Timeline
- 08-07-2026PublishedVulnerability first disclosed.
- 08-07-2026Last modifiedVulnerability information updated.
Description
ImageMagick before 7.1.2-15 contains a heap-buffer-overflow read vulnerability in GetPixelIndex caused by OpenPixelCache updating image channel metadata before pixel cache memory allocation. Attackers can trigger memory and disk allocation failures to cause a heap-buffer-overflow read affecting any writer calling GetPixelIndex.
CVSS metrics
8 scores · 5 sources · 2 versionsLow 2.1Preferred score · CVE.org (CNA)
CVSS:4.0/AV:N/AC:H/AT:P/PR:H/UI:N/VC:L/VI:N/VA:L/SC:N/SI:N/SA:NSourcesAll 3 agree
- OSV · UbuntuEcosystem advisory · calculated2.1LowCVSS:4.0/AV:N/AC:H/AT:P/PR:H/UI:N/VC:L/VI:N/VA:L/SC:N/SI:N/SA:N
- NVDNIST2.1LowCVSS:4.0/AV:N/AC:H/AT:P/PR:H/UI:N/VC:L/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
Medium 4.2Preferred score · NVD (NIST)
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:LSources5 sources · 3.3–4.2
- CVE.orgCNA3.3LowCVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:L/I:N/A:LDiffers
- OSV · UbuntuEcosystem advisory · calculated4.2MediumCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:L
- OSV · DebianEcosystem advisory · calculated4.2MediumCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:L
- OSV · NugetEcosystem advisory · calculated3.3LowCVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:L/I:N/A:LDiffers
EPSS trend
Probability
0.19%
Chance of exploitation in the next 30 days
Percentile
8%
Versus all other CVEs
30-day change
0.00 pp
From 0.19% on 22-09-2026
22-09-202622-10-2026
EPSS score0.19%
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+deb12u8 | < 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
- imagemagickAll versions (No fix recorded)
4 vendors · 22 products
References
7 links- www.vulncheck.com/advisories/…Third Party Advisory
