What is CVE-2025-64182?

CVE-2025-64182 is a high-severity vulnerability in Academysoftwarefoundation Openexr, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 7.8/10. Published 2025-11-10.

How severe is CVE-2025-64182?

High severity. CVSS v3 base score is 7.8 out of 10.

Buffer overflow in Academysoftwarefoundation Openexr

CVE-2025-64182

OpenEXR provides the specification and reference implementation of the EXR file format, an image storage format for the motion picture industry. In versions 3.2.0 through 3.2.4, 3.3.0 through 3.3.5, and 3.4.0 through 3.4.2, a memory safety bug in the legacy OpenEXR Python adapter (the deprecated OpenEXR.InputFile wrapper) allow crashes and likely code execution when opening attacker-controlled EXR files or when passing crafted Python objects. Integer overflow and unchecked allocation in InputFile.channel() and InputFile.channels() can lead to heap overflow (32 bit) or a NULL deref (64 bit). Versions 3.2.5, 3.3.6, and 3.4.3 contain a patch for the issue.

Vulnerability class: Buffer Overflow

EPSS: 0.002 (15.3th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.

Affected products

Academysoftwarefoundation Openexr — versions >= 3.2.0, < 3.2.5, >= 3.3.0, < 3.3.6, >= 3.4.0, < 3.4.3
Openexr

Weakness classification (CWE)

CWE-120 — Buffer Copy without Checking Size of Input (Classic Buffer Overflow)

References

security-advisories@github.com (x_refsource_CONFIRM, Exploit, Vendor Advisory)
security-advisories@github.com (Product, x_refsource_MISC)

Frequently asked questions

What is CVE-2025-64182?: CVE-2025-64182 is a high-severity vulnerability in Academysoftwarefoundation Openexr, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 7.8/10. Published 2025-11-10.
How severe is CVE-2025-64182?: High severity. CVSS v3 base score is 7.8 out of 10.