CVE-2025-49601 (GCVE-0-2025-49601)

Vulnerability from cvelistv5 – Published: 2025-07-04 00:00 – Updated: 2025-07-08 14:36
VLAI?
Summary
In MbedTLS 3.3.0 before 3.6.4, mbedtls_lms_import_public_key does not check that the input buffer is at least 4 bytes before reading a 32-bit field, allowing a possible out-of-bounds read on truncated input. Specifically, an out-of-bounds read in mbedtls_lms_import_public_key allows context-dependent attackers to trigger a crash or limited adjacent-memory disclosure by supplying a truncated LMS (Leighton-Micali Signature) public-key buffer under four bytes. An LMS public key starts with a 4-byte type indicator. The function mbedtls_lms_import_public_key reads this type indicator before validating the size of its input.
Severity ?
4.8 (Medium)
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:L
CWE
Assigner
References
Impacted products
Vendor Product Version
Mbed mbedtls Affected: 3.3.0 , < 3.6.4 (custom)
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