CVE-2025-53644: OpenCV contains a use after free buffer write due to an uninitialized pointer

Severity: critical (CVSS 9.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.4% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2025-07-17 · updated 2026-06-17
Weakness: CWE-457

Description

OpenCV is an Open Source Computer Vision Library. Versions 4.10.0 and 4.11.0 have an uninitialized pointer variable on stack that may lead to arbitrary heap buffer write when reading crafted JPEG images. Version 4.12.0 fixes the vulnerability.

Affected products

OpenCV 3.0.0: from 4.10.0 before 4.12.0 — fixed in 4.12.0

How to fix

Upgrade to a fixed version: OpenCV 3.0.0 4.12.0. Check the vendor advisory for mitigations.

References

https://github.com/opencv/opencv/commit/a39db41390de546d18962ee1278bd6dbb715f466
https://github.com/opencv/opencv/issues/27271
https://github.com/opencv/opencv/releases/tag/4.12.0
https://securitylab.github.com/advisories/GHSL-2025-057_OpenCV/

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