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CVE-2025-64182

Openexr buffer overflow

7.8 HIGHPublic exploitEPSS 0.24%
  1. Published10 Nov 2025

Description

OpenEXR provides the specification and reference implementation of the EXR file format, an image storage format for the motion picture industry. In versions 3.2.0 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.

CVSS 3.1 breakdown

Attack vectorLocal
Attack complexityLow
Privileges requiredNone
User interactionRequired
ScopeUnchanged
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Affected products

Openexr≥ 3.2.0 < 3.2.5 · ≥ 3.3.0 < 3.3.6 · ≥ 3.4.0 < 3.4.3

Remediation

Fixed in
Openexr≥ 3.2.5

References

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Frequently asked

Is CVE-2025-64182 being actively exploited?

CVE-2025-64182 is not in the CISA KEV catalog. A public exploit reference exists, so treat it as exploitable. Its EPSS exploit probability is 0.24%.

How severe is CVE-2025-64182?

CVE-2025-64182 has a CVSS 3.1 base score of 7.8, rated high. EPSS estimates a 0.24% probability of exploitation.

Which products are affected by CVE-2025-64182?

Affected products include Openexr.

How do I fix CVE-2025-64182?

Upgrade affected software to a fixed version, for example Openexr 3.2.5 or later, then confirm no affected versions remain in your inventory.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2025-64182 against the real software inventory on every managed device, as each hourly inventory arrives. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.