Is CVE-2026-40244 actively exploited?

No active exploitation of CVE-2026-40244 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-40244 be exploited remotely?

No. CVE-2026-40244 requires local access to exploit.

What is the CVSS score of CVE-2026-40244?

CVE-2026-40244 has a CVSS score of 7.1 (HIGH).

HOME VULNERABILITIESCVE-2026-40244

HIGH

CVE-2026-40244

CWE-190Published: April 21, 2026· Updated: Apr 22, 2026

7.1

CVSS v3.1

EPSS:0.01%probability of exploitation in 30 daysPercentile:2.5th

Official Description

OpenEXR provides the specification and reference implementation of the EXR file format, an image storage format for the motion picture industry. In versions 3.4.0 through 3.4.9, 3.3.0 through 3.3.9, and 3.2.0 through 3.2.7, `internal_dwa_compressor.h:1722` performs `curc->width * curc->height` in `int32` arithmetic without a `(size_t)` cast. This is the same overflow pattern fixed in other locations by the recent CVE-2026-34589 batch, but this line was missed. Versions 3.4.10, 3.3.10, and 3.2.8 contain a fix that addresses `internal_dwa_compressor.h:1722`.

NVD Source

Technical Analysis

CVE-2026-40244 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 full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 7.1.