Out-of-bounds Write Affecting openssl package, versions >=0.9.27 <0.10.78
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-RUST-OPENSSL-16134560
- published23 Apr 2026
- disclosed22 Apr 2026
- creditUnknown
Introduced: 22 Apr 2026
NewCVE-2026-41676 (opens in a new tab)How to fix?
Upgrade openssl to version 0.10.78 or higher.
Overview
openssl is a bindings for the Rust programming language.
Affected versions of this package are vulnerable to Out-of-bounds Write through the derive path in Deriver and PkeyCtxRef when deriving key material into an undersized caller buffer. An attacker can trigger a write past the end of a &mut [u8] by causing X25519, X448, or HKDF-extract derivation on OpenSSL 1.1.x or LibreSSL to produce a full-length shared secret into a shorter buffer, corrupting memory and crashing the process.