← Back

CVE-2026-34378

nvd nist
Published: Apr 6, 2026Modified: Jun 17, 2026

JSON object

Loading...
6.5
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Exploitability: 2.8 / Impact: 3.6
Source: security-advisories@github.com (Secondary)

Description

OpenEXR provides the specification and reference implementation of the EXR file format, an image storage format for the motion picture industry. From 3.4.0 to before 3.4.9, a missing bounds check on the dataWindow attribute in EXR file headers allows an attacker to trigger a signed integer overflow in generic_unpack(). By setting dataWindow.min.x to a large negative value, OpenEXRCore computes an enormous image width, which is later used in a signed integer multiplication that overflows, causing the process to terminate with SIGILL via UBSan. This vulnerability is fixed in 3.4.9.

Affected (1)

Products: Openexr: Openexr
Openexr
1 product
Openexr
Configuration A
1 vulnerable
Vulnerable SoftwareAffected Versions
Openexr
From 3.4.0 to 3.4.9

Related CWEs

CWE-190
Integer Overflow or Wraparound
The product performs a calculation that can produce an integer overflow or wraparound when the logic assumes that the resulting value will always be larger than the original value. This occurs when an integer value is incremented to a value that is too large to store in the associated representation. When this occurs, the value may become a very small or negative number.

References (2)

Source: security-advisories@github.com
ProductRelease Notes
Source: security-advisories@github.com
ExploitVendor Advisory

Timeline

No history available yet.