Integer Overflow or Wraparound Affecting openexr package, versions [3.2.1,3.2.8)[3.3.0,3.3.10)[3.4.2,3.4.10)
Threat Intelligence
Snyk has a proof-of-concept or detailed explanation of how to exploit this vulnerability.
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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- published24 Apr 2026
- disclosed21 Apr 2026
- creditMedoedus
Introduced: 21 Apr 2026
NewCVE-2026-40244 (opens in a new tab)How to fix?
Upgrade openexr to version 3.2.8, 3.3.10, 3.4.10 or higher.
Overview
Affected versions of this package are vulnerable to Integer Overflow or Wraparound in the setupChannelData() function in internal_dwa_compressor.h due to improper handling of arithmetic operations on image dimensions. An attacker can cause unexpected behavior or potentially execute arbitrary code by providing crafted input files that trigger integer overflow during pointer arithmetic.