CVE-2026-56374 ImageMagick CVE debrief

Who should care

Users of ImageMagick versions prior to 7.1.2-19 should update to the latest version to mitigate this vulnerability. This vulnerability has a CVSS score of 4.8 and a severity of MEDIUM. Operators, administrators, and security teams should review the vulnerability and take necessary actions to protect their systems.

Technical summary

The vulnerability is caused by a lack of boundary checks in the FTXT encoder when parsing ftxt:format. This can lead to a heap buffer overflow, allowing remote attackers to cause denial of service or information disclosure by crafting malicious FTXT image files. The vulnerability has a CVSS score of 4.8 and a severity of MEDIUM. Users of ImageMagick versions prior to 7.1.2-19 should update to the latest version to mitigate this vulnerability. Affected product deployments should be reviewed and updated to prevent exploitation. Operators, administrators, and security teams should review the vulnerability and take necessary actions to protect their systems, including restricting access to FTXT image files and monitoring for suspicious activity.

Defensive priority

Medium priority should be given to updating ImageMagick to version 7.1.2-19 or later, as this vulnerability has a CVSS score of 4.8 and can be exploited remotely.

Recommended defensive actions

• Update ImageMagick to version 7.1.2-19 or later
• Restrict access to FTXT image files
• Monitor for suspicious activity
• Review compensating controls for exposed systems while remediation is scheduled and verified
• Check relevant monitoring, detection, and logs for exposed assets that need extra review
• Track exceptions, retest remediated assets, and close the item only after evidence is documented
• Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up

Evidence notes

The CVE record was published on 2026-07-08T14:17:17.037Z and was last modified on 2026-07-09T14:51:05.950Z. The NVD entry is currently Analyzed. The vulnerability is caused by a lack of boundary checks in the FTXT encoder when parsing ftxt:format. This can lead to a heap buffer overflow, allowing remote attackers to cause denial of service or information disclosure by crafting malicious FTXT image files. Users of ImageMagick versions prior to 7.1.2-19 should update to the latest version to mitigate this vulnerability.

Sources and references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.