Integer Overflow or Wraparound Affecting openexr package, versions [3.4.2,3.4.12)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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- published23 Jun 2026
- disclosed18 Jun 2026
- creditstorm-0rigin
Introduced: 18 Jun 2026
NewCVE-2026-44663 (opens in a new tab)How to fix?
Upgrade openexr to version 3.4.12 or higher.
Overview
Affected versions of this package are vulnerable to Integer Overflow or Wraparound in the ht_undo_impl function when decoding a specially crafted HTJ2K-compressed EXR file. An attacker can cause a heap out-of-bounds write by supplying a file with a large decode->channels[i].width value that triggers an integer overflow during pointer arithmetic.