Improperly Implemented Security Check for Standard Affecting mbedtls package, versions [3.4.1,3.6.6)
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-MBEDTLS-15929053
- published8 Apr 2026
- disclosed1 Apr 2026
- creditM. Heuft
Introduced: 1 Apr 2026
NewCVE-2026-25834 (opens in a new tab)How to fix?
Upgrade mbedtls to version 3.6.6 or higher.
Overview
Affected versions of this package are vulnerable to Improperly Implemented Security Check for Standard in the mbedtls_ssl_conf_sig_algs() function. An attacker can reduce the security strength of cryptographic operations by forcing the use of weaker algorithms, which may result in information disclosure or denial of service.