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CVE-2025-64183

24
FAUCET Score

CVE-2025-64183 is a use-after-free vulnerability in OpenEXR versions 3.2.0-3.2.4, 3.3.0-3.3.5, and 3.4.0-3.4.2, specifically within the PyObject_StealAttrString function of its legacy Python adapter. This flaw occurs when a dangling pointer is passed to Python APIs, leading to a use-after-free condition. Rated with a CVSS score of 7.5 (High), this vulnerability has a network attack vector and low attack complexity, potentially leading to high availability impact. There is no impact on confidentiality or integrity. Currently, there is no evidence of active exploitation, publicly available exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage regarding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
>= 3.2.0, < 3.2.5CPE matchmatch criteria
cpe:2.3:a:openexr:openexr:*:*:*:*:*:*:*:*
>= 3.3.0, < 3.3.6CPE matchmatch criteria
cpe:2.3:a:openexr:openexr:*:*:*:*:*:*:*:*
>= 3.4.0, < 3.4.3CPE matchmatch criteria
cpe:2.3:a:openexr:openexr:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 4.0

5.5MEDIUM

CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Attack Vector
LOCAL
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
NONE
VS Confidentiality
NONE
VS Integrity
NONE
VS Availability
HIGH
SS Confidentiality
NONE
SS Integrity
NONE
SS Availability
NONE
Exploit Maturity
PROOF_OF_CONCEPT
CvssVersion
4.0

Exploit Intelligence

EPSS Score
0.29%
Probability of exploitation in next 30 days
EPSS Percentile
21.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0029 is in the 5th percentile among its peer group of 51,553 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (4)

pippatch availablevia ghsa
Product: OpenEXRFixed in: 3.2.5
pippatch availablevia ghsa
Product: OpenEXRFixed in: 3.3.6
pippatch availablevia ghsa
Product: OpenEXRFixed in: 3.4.3
github_advisoryvendor investigatingvia nvd_reference
View patch

Vendor Advisories (2)

pipGHSA-57cw-j6vp-2p9mmedium

OpenEXR has use after free in PyObject_StealAttrString

Apr 6, 2026
redhatCVE-2025-64183Moderate

openexr: use after free in PyObject_StealAttrString

Nov 10, 2025

References

github.com / AcademySoftwareFoundation/openexr/blob/b3a19903db0672c63055023aa788e592b16ec3c5/src/wrappers/python/PyOpenEXR_old.cpp
Product
github.com / AcademySoftwareFoundation/openexr/security/advisories/GHSA-57cw-j6vp-2p9m
ExploitVendor Advisory