CVE-2025-52497

A flaw was found in mbedtls. The mbedtlspemreadbuffer and two mbedtlspkparse functions exhibit a one-byte heap-based buffer underflow when parsing untrusted PEM input. This flaw allows a network-based attacker to trigger the underflow by providing a maliciously crafted PEM file, resulting in a...

CVE-2025-52497

CVE-2025-52497 affects Mbed TLS before 3.6.4. The issue is a one-byte heap-based buffer underflow in PEM parsing (mbedtls_pem_read_buffer) and in two mbedtls_pk_parse functions when handling untrusted PEM input. Base CVSS v3.1 score is 4.8 (Network attack, High complexity, No privileges, No user ...