CVE-2025-52497
MEDIUM4.8EPSS 0.36%Published: 7/4/2025Modified: 4/28/2026
Description
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.
Affected packages (2)
- Alpine/mbedtlsfrom 0, < 3.6.4-r0
- Debian/mbedtlsfrom 0, < 2.16.9-0.1+deb11u2
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | MEDIUM4.8 | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:L |