Out-of-bounds Write Affecting openexr package, versions [3.2.1,3.2.7)[3.3.0,3.3.9)[3.4.2,3.4.8)
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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Test your applications- Snyk IDSNYK-CONAN-OPENEXR-15916976
- published6 Apr 2026
- disclosed3 Apr 2026
- creditNico
Introduced: 3 Apr 2026
NewCVE-2026-34544 (opens in a new tab)How to fix?
Upgrade openexr to version 3.2.7, 3.3.9, 3.4.8 or higher.
Overview
Affected versions of this package are vulnerable to Out-of-bounds Write through the uncompress_b44_impl file. An attacker can cause an out-of-bounds write by supplying a specially crafted B44 or B44A EXR file that triggers an integer overflow, resulting in memory corruption or application crash during decompression.