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© 2026 FAUCET Technologies LLC. All rights reserved.

CVE-2026-42217

37
FAUCET Score

OpenEXR provides the specification and reference implementation of the EXR file format, an image storage format for the motion picture industry. From versions 3.0.0 to before 3.2.9, 3.3.0 to before 3.3.11, and 3.4.0 to before 3.4.11, readVariableLengthInteger() decodes a variable-length integer from untrusted EXR input without bounding the shift count. After enough continuation bytes, the code executes a left shift by 70 on a 64-bit value, which is undefined behavior. This issue has been patched in versions 3.2.9, 3.3.11, and 3.4.11.

First published: May 7, 2026Last modified: May 7, 2026

Impacted Technologies

VendorProductVersion(s)CPE
>= 3.0.0, < 3.2.9CPE matchmatch criteria
cpe:2.3:a:openexr:openexr:*:*:*:*:*:*:*:*
>= 3.3.0, < 3.3.11CPE matchmatch criteria
cpe:2.3:a:openexr:openexr:*:*:*:*:*:*:*:*
>= 3.4.0, < 3.4.11CPE matchmatch criteria
cpe:2.3:a:openexr:openexr:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 4.0

6.3MEDIUM

CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/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
NETWORK
Attack Complexity
LOW
Attack Requirements
PRESENT
Privileges Required
NONE
User Interaction
NONE
VS Confidentiality
LOW
VS Integrity
NONE
VS Availability
NONE
SS Confidentiality
NONE
SS Integrity
NONE
SS Availability
NONE
Exploit Maturity
NOT_DEFINED
CvssVersion
4.0

Exploit Intelligence

EPSS Score
0.39%
Probability of exploitation in next 30 days
EPSS Percentile
31.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0039 is in the 9th percentile among its peer group of 36,897 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (1)

github_advisorypatch availablevia nvd_reference
View patch

References

github.com / AcademySoftwareFoundation/openexr/commit/21eaa33bcbbb0c83a5fc42f6b6d65b70a996e63c
Patch
github.com / AcademySoftwareFoundation/openexr/pull/2378
Issue TrackingPatch
github.com / AcademySoftwareFoundation/openexr/security/advisories/GHSA-3c67-4wwp-w52m
ExploitMitigationVendor Advisory