Out-of-bounds Read Affecting openssl package, versions [1.0.2u,3.1.0)
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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Test your applications- Snyk IDSNYK-CONAN-OPENSSL-17276737
- published10 Jun 2026
- disclosed9 Jun 2026
- creditBhabani Sankar Das,Haruki Oyama
Introduced: 9 Jun 2026
NewCVE-2026-9076 (opens in a new tab)How to fix?
Upgrade openssl to version 3.1.0 or higher.
Overview
Affected versions of this package are vulnerable to Out-of-bounds Read in kek_unwrap_key() in the CMS component. An attacker supplying malicious CMS data can select a stream-mode KEK cipher via the OID in the PWRI keyEncryptionAlgorithm, defeating the block-length minimum-length guard so that the buffer allocated for the unwrapped key is too small to hold the 7-byte RFC 3211 check-byte read, causing a crash when the allocation borders an unmapped page, which is not controllable by the attacker.