7.5

CVE-2026-86421: imagemagick Uncontrolled Resource Consumption

CVSS: 7.5v3.1HighAnalyzed
AliasesUBUNTU-CVE-2026-86421DEBIAN-CVE-2026-86421
Published 07-09-2026Last modified 08-09-2026
Open JSON

Vulnerability summary

CVE-2026-86421 is a high (CVSS 7.5) Uncontrolled Resource Consumption vulnerability in imagemagick. EPSS estimates a 0.45% chance of exploitation in the next 30 days, higher than 38% of scored vulnerabilities.

Overall risk
30/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.5/10
010
High · v3.1 (NVD)
EPSS score
0.45%
0%100%
Low · +0.01 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 8 · Related 7
MGASA-2026-0414OPENSUSE-SU-2026:11801-1OPENSUSE-SU-2026:21911-1SUSE-SU-2026:23901-1SUSE-SU-2026:4265-1SUSE-SU-2026:4334-1

Timeline

  1. 07-09-2026
    PublishedVulnerability first disclosed.
  2. 08-09-2026
    Last modifiedVulnerability information updated.

Description

ImageMagick before 7.1.2-30 and 6.9.13-55 contains a memory leak in the MSL image decoder. A crafted MSL image triggers memory allocation without proper deallocation, allowing an attacker to exhaust memory and cause a denial of service.

CVSS metrics

7 scores · 4 sources · 2 versions

EPSS trend

Probability

0.45%

Chance of exploitation in the next 30 days

Percentile

38%

Versus all other CVEs

30-day change

+0.01 pp

From 0.44% on 20-09-2026

20-09-202620-10-2026
EPSS score
0.45%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Debian1 product
  • imagemagickAll versions (No fix recorded) | < 8:7.1.2.31+dfsg1-1
Imagemagick1 product
  • imagemagick< 7.1.2-30 | < 6.9.13-55 | ≥ 7.0.0-0, < 7.1.2-30
Ubuntu1 product
  • imagemagickAll versions (No fix recorded)

3 vendors · 3 products

References

5 links