CVE-2025-52497

CVSS 4.8 MEDIUMEPSS 0.3%CWE-193

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.

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:L

Affected products

Mbed · mbedtls

Want to know if your infrastructure is exposed to this?

Talk to TrueHacking →

References

https://github.com/Mbed-TLS/mbedtls-docs/blob/main/security-advisories/mbedtls-security-advisory-2025-06-2.md https://lists.debian.org/debian-lts-announce/2025/08/msg00013.html