Stack-based Buffer Overflow Affecting openssl package, versions [3.4.0,3.4.4)[3.5.0,3.5.5)[3.6.0,3.6.1)
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-15123587
- published28 Jan 2026
- disclosed27 Jan 2026
- creditStanislav Fort,Petr Šimeček,Hamza
Introduced: 27 Jan 2026
CVE-2025-11187 (opens in a new tab)How to fix?
Upgrade openssl to version 3.4.4, 3.5.5, 3.6.1 or higher.
Overview
Affected versions of this package are vulnerable to Stack-based Buffer Overflow or null pointer dereference in pkcs12/p12_mutl.c. If a user can be convinced to process a malicious PKCS#12 file, malicious keylength or salt values can be used to cause a crash. Subsequently, in the case of overflowing the keylength, memory may be controlled in a way to enable code execution.
Versions prior to 3.4 are not vulnerable because they do not support PBMAC1 in PKCS#12.