Out-of-bounds read in mbed TLS - CVE-2025-49601
Published: July 7, 2025
Vulnerability identifier: #VU112446
CSH Severity: Medium
CVSS v4: 8.8 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2025-49601
CWE-ID: CWE-125
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to gain access to potentially sensitive information.
The vulnerability exists due to a boundary condition in mbedtls_lms_import_public_key(). A remote attacker can pass specially crafted LMS public key to the application, trigger an out-of-bounds read error and read contents of memory on the system or perform a denial of service attack.
Affected software
mbed TLS
Fedora
mbedtls
Fedora
mbedtls
How to mitigate CVE-2025-49601
Install updates from vendor's website.
mbed TLS - update to 3.6.4
mbedtls - addressed in versions 3.6.4-1.fc42, 3.6.4-2.el10_0, 3.6.4-2.el10_1
mbedtls - addressed in versions 3.6.4-1.fc42, 3.6.4-2.el10_0, 3.6.4-2.el10_1