CVE-2026-34589

HIGH EPSS 20.4%
Published Apr 6, 20262mo ago · Modified Jun 17, 20262w ago
8.4 CVSS 4.0
High
Find Similar
Published Apr 6, 2026 2mo ago
Last Modified Jun 17, 2026 2w ago

Description

OpenEXR provides the specification and reference implementation of the EXR file format, an image storage format for the motion picture industry. From 3.2.0 to before 3.2.7, 3.3.9, and 3.4.9, the DWA lossy decoder constructs temporary per-component block pointers using signed 32-bit arithmetic. For a large enough width, the calculation overflows and later decoder stores operate on a wrapped pointer outside the allocated rowBlock backing store. This vulnerability is fixed in 3.2.7, 3.3.9, and 3.4.9.

CVSS Details

Base Score
8.4
Exploitability
—
Impact
—
Vector string
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/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 Local
Attack Complexity Low
Privileges Required None
User Interaction A
Scope X

Threat Intelligence

EPSS Exploit Probability
20.4% percentile
Exploit & Patch Status
Public Exploit Known
No Patch Available

Weaknesses 2

CWE-190 Integer Overflow or Wraparound Numeric Error
CWE-787 Out-of-bounds Write Memory Safety

Affected Products 3

VendorProductVersionRange
openexropenexr*≥3.2.0  –  <3.2.7
openexropenexr*≥3.3.0  –  <3.3.9
openexropenexr*≥3.4.0  –  <3.4.9

References 4

  • github.com https://github.com/AcademySoftwareFoundation/openexr/releases/tag/v3.2.7
    ProductRelease Notes
  • github.com https://github.com/AcademySoftwareFoundation/openexr/releases/tag/v3.3.9
    ProductRelease Notes
  • github.com https://github.com/AcademySoftwareFoundation/openexr/releases/tag/v3.4.9
    ProductRelease Notes
  • github.com https://github.com/AcademySoftwareFoundation/openexr/security/advisories/GHSA-p8xc-w3q4-h64x
    ExploitVendor Advisory

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.