Vulnerability Monitor

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CVE-2025-52497

Mbed TLS before 3.6.4 has a PEM parsing one-byte heap-based buffer underflow, in mbedtls_pem_read_buffer and two mbedtls_pk_parse functions, via untrusted PEM input.

Published

2025-07-04T15:15:22.787

Last Modified

2025-07-17T16:00:42.443

Status

Analyzed

Source

[email protected]

Severity

CVSSv3.1: 4.8 (MEDIUM)

Weaknesses

Type: Primary
CWE-193

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Application	arm	mbed_tls	< 3.6.4	Yes

References

https://github.com/Mbed-TLS/mbedtls-docs/blob/main/security-advisories/mbedtls-security-advisory-2025-06-2.md Third Party Advisory ([email protected])