CVE intelligence

CVE-2026-56373

Vulnerability intelligence

Published Jul 10, 2026Sources checked Oct 28, 2026

5.3MEDIUMCVSS out of 10

What this means

Review the available evidence

CVE-2026-56373 and is rated Medium severity with a CVSS score of 5.3. It is not in the current CISA KEV record we collected. That does not prove exploitation has not occurred.

What to do next

Remediation and response

Ubuntu Security Notices guidance

Vendor revision: Sep 14, 2026

USN-8739-1 fixed vulnerabilities in ImageMagick.

CISA KEVNot listedBased on the latest collected catalog

EPSS0.2%Estimated 30-day exploitation probability

Ransomware useNot markedCISA KEV ransomware field

Threat actors0Source-linked actor relationships

Overview

What is CVE-2026-56373?

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.

Source: NVD