Integer Overflow or Wraparound Affecting openexr package, versions [2.4.0,3.2.6)[3.3.0,3.3.8)[3.4.2,3.4.6)
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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- published3 Mar 2026
- disclosed2 Mar 2026
- creditQuang Luong
Introduced: 2 Mar 2026
CVE-2026-27622 (opens in a new tab)How to fix?
Upgrade openexr to version 3.2.6, 3.3.8, 3.4.6 or higher.
Overview
Affected versions of this package are vulnerable to Integer Overflow or Wraparound in the CompositeDeepScanLine::readPixels() function. An attacker can cause memory corruption or potentially execute arbitrary code by providing a specially crafted multipart deep EXR file with large sample counts per pixel, leading to an integer overflow and subsequent heap out-of-bounds write during decoding.