Timing Attack Affecting openssl package, versions [3.2.0-alpha1,3.2.6)[3.3.0-alpha1,3.3.5)[3.4.0-alpha1,3.4.3)[3.5.0-alpha1,3.5.4)
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-UNMANAGED-OPENSSL-13180445
- published2 Oct 2025
- disclosed30 Sept 2025
- creditStanislav Fort
Introduced: 30 Sep 2025
NewCVE-2025-9231 (opens in a new tab)How to fix?
Upgrade openssl to version 3.2.6, 3.3.5, 3.4.3, 3.5.4 or higher.
Overview
Affected versions of this package are vulnerable to Timing Attack via SM2 algorithm implementation on 64 bit ARM platforms. An attacker can recover private keys by performing high-precision timing measurements in a specialized attack setup.
Note:
Since OpenSSL does not directly support certificates with SM2 keys in TLS, this issue only exploitable if SM2 support is added via a custom provider and the attacker can obtain precise timing data from the target system.