Out-of-bounds Read Affecting mbedtls package, versions [3.4.1,3.6.4)
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-10768241
- published17 Jul 2025
- disclosed4 Jul 2025
- creditLinh Le, Ngan Nguyen
Introduced: 4 Jul 2025
NewCVE-2025-49601 (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 Out-of-bounds Read via the mbedtls_lms_import_public_key function. An attacker can cause a crash or disclose limited adjacent memory by providing a truncated LMS public-key buffer that is less than four bytes in length.
Workaround
For the users that are unable to upgrade to the fixed version it is recommended to validate that the key provided to mbedtls_lms_import_public_key() is at least 4 bytes long.