CVE-2025-52497CWE-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…

Medium · published July 4, 2025

CVSS v3.1
4.8
EPSS
0%
Percentile
25.0
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
4.8 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:L
CVSS v4.0
Not supplied
EPSS
0.00331 · 25.0th percentile
Weakness
CWE-193 · Off-by-one Error
Published
2025-07-04T00:00Z
EPSS history
Timeline
  • 04 JUL 00:00Z
    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…
    cvelistv5