Is CVE-2026-42146 actively exploited?

No active exploitation of CVE-2026-42146 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-42146 be exploited remotely?

No. CVE-2026-42146 requires local access to exploit.

What is the CVSS score of CVE-2026-42146?

CVE-2026-42146 has a CVSS score of 5.5 (MEDIUM).

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MEDIUM

CVE-2026-42146

CWE-789Published: May 4, 2026· Updated: May 7, 2026

5.5

CVSS v3.1

EPSS:0.01%probability of exploitation in 30 daysPercentile:1.6th

Official Description

CImg Library is a C++ library for image processing. Prior to commit c3aacf5, the nb_colors field read from the BMP file header is used directly to compute an allocation size without validating it against the remaining file size. A crafted BMP file with a large nb_colors value triggers an out-of-memory condition, crashing any application that uses CImg to load untrusted BMP files. This issue has been patched via commit c3aacf5.

NVD Source

Technical Analysis

CVE-2026-42146 requires local access, meaning attackers must already have a foothold on the target system.

Exploitation does not require any privileges, though user interaction (Required) is needed, which slightly reduces the risk of mass automated attacks.

A successful exploit results in availability disruption (denial of service), with a CVSS base score of 5.5.