CVE-2026-28686 PUBLISHED

ImageMagick has a write heap-buffer-overflow in PCL encoder via undersized output buffer

Assigner: GitHub_M
Reserved: 02.03.2026 Published: 09.03.2026 Updated: 09.03.2026

ImageMagick is free and open-source software used for editing and manipulating digital images. Prior to versions 7.1.2-16 and 6.9.13-41, A heap-buffer-overflow vulnerability exists in the PCL encode due to an undersized output buffer allocation. This vulnerability is fixed in 7.1.2-16 and 6.9.13-41.

Metrics

CVSS 3.1

CVSS Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H
CVSS Score: 6.8

Attack Vector	Local	Scope	Unchanged
Attack Complexity	Low	Confidentiality Impact	None
Privileges Required	None	Integrity Impact	Low
User Interaction	None	Availability Impact	High

CVSS 3.1

Product Status

Vendor	ImageMagick
Product	ImageMagick
Versions	Version >= 7.0.0, < 7.1.2-16 is affected Version < 6.9.13-41 is affected

References

https://github.com/ImageMagick/ImageMagick/security/advisories/GHSA-467j-76j7-5885

Problem Types

CWE-122: Heap-based Buffer Overflow CWE
CWE-131: Incorrect Calculation of Buffer Size CWE