CVE-2026-26983Network attack vector

Unauthenticated service crash via invalid MSL map

Published Feb 24, 2026 · Updated Feb 24, 2026

NULL pointer dereference in ImageMagick 6 before 6.9.13-40 and 7 before 7.1.2-15 allows remote attackers to crash the MSL interpreter. The map branch in MSLStartElement calls RemapImages with affinity_image without checking that the parsed map produced a live image, then destroys that reference. No authentication or interaction is required when an exposed workflow accepts attacker-supplied MSL; impact is limited to crashing that processing service.

CVSS severity5.3
Medium
EPSS probability0.45%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

NULL pointer dereference in ImageMagick 6 before 6.9.13-40 and 7 before 7.1.2-15 allows remote attackers to crash the MSL interpreter. The map branch in MSLStartElement calls RemapImages with affinity_image without checking that the parsed map produced a live image, then destroys that reference. No authentication or interaction is required when an exposed workflow accepts attacker-supplied MSL; impact is limited to crashing that processing service.

The record

CVE
CVE-2026-26983
Published
Feb 24, 2026
Updated
Feb 24, 2026
Vendor
ImageMagick Studio LLC
Product
ImageMagick
Classifications
CWE-476, CWE-416, T1499.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Feb 24, 2026CVE publishedPublication date reported by the CVE source.
  2. Feb 24, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=< 6.9.13-40
  2. Affected versionversion=>= 7.0.0, < 7.1.2-15

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

ImageMagick Studio LLC · ImageMagickversion=< 6.9.13-40; version=>= 7.0.0, < 7.1.2-15

Published CVSS scores

5.3GitHub, Inc.CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-476NULL Pointer Dereference
CWE-416Use After Free
T1499.004Application or System Exploitation

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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