Covert Timing Channel Affecting mbedtls package, versions [3.6.1,3.6.4)
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-CONAN-MBEDTLS-11775545
- published11 Aug 2025
- disclosed20 Jul 2025
- creditKa Lok Wu, Doria Tang
Introduced: 20 Jul 2025
NewCVE-2025-49087 (opens in a new tab)How to fix?
Upgrade mbedtls to version 3.6.4 or higher.
Overview
Affected versions of this package are vulnerable to Covert Timing Channel in block cipher padding removal. An attacker can recover plaintext data by exploiting timing discrepancies during decryption when PKCS#7 padding mode is used.