Is CVE-2026-27622 actively exploited?

No active exploitation of CVE-2026-27622 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-27622 be exploited remotely?

No. CVE-2026-27622 requires local access to exploit.

What is the CVSS score of CVE-2026-27622?

CVE-2026-27622 has a CVSS score of 7.8 (HIGH).

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HIGH

CVE-2026-27622

CWE-787Published: March 3, 2026· Updated: Mar 5, 2026

7.8

CVSS v3.1

EPSS:0.01%probability of exploitation in 30 daysPercentile:2.6th

Official Description

OpenEXR provides the specification and reference implementation of the EXR file format, an image storage format for the motion picture industry. In CompositeDeepScanLine::readPixels, per-pixel totals are accumulated in vector<unsigned int> total_sizes for attacker-controlled large counts across many parts, total_sizes[ptr] wraps modulo 2^32. overall_sample_count is then derived from wrapped totals and used in samples[channel].resize(overall_sample_count). Decode pointer setup/consumption proceeds with true sample counts, and write operations in core unpack (generic_unpack_deep_pointers) overrun the undersized composite sample buffer. This vulnerability is fixed in v3.2.6, v3.3.8, and v3.4.6.

NVD Source

Technical Analysis

CVE-2026-27622 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 complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 7.8.

From a weakness classification perspective (CWE-787): Out-of-bounds write vulnerabilities can lead to data corruption, crashes, or arbitrary code execution.