Riskcovery

CVE-2026-42217

OpenEXR: Shift exponent overflow in `readVariableLengthInteger()` (`ImfIDManifest.cpp`)

State
Published
Severity
6.3 Medium
Published
May 7, 2026
Updated
May 7, 2026
Reserved
Apr 25, 2026

Read the record on cve.org

Description

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.

Scores

CVSSScoreVectorSource
4.06.3 MediumCVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:NGitHub_M

Weaknesses

  • CWE-190 Integer Overflow or Wraparound

Affected Products

ProductVersions
openexrAcademySoftwareFoundation
  • >= 3.0.0, < 3.2.9Affected
  • >= 3.3.0, < 3.3.11Affected
  • >= 3.4.0, < 3.4.11Affected

References

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