CVE-2025-52497
MEDIUM
4.8
CVSS Score
Published: July 4, 2025 at 12:00 AM UTC
Updated: June 17, 2026 at 09:36 AM UTC
2 products affected across 2 vendorsmbed TLSMbedtls
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Severity
MEDIUM4.8
Exploit prediction
EPSS 0.3%
SSVC
No known exploit
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
Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.
Remediation
No guide yetNo remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.
References (2)
Source: af854a3a-2127-422b-91ae-364da2661108
https://lists.debian.org/debian-lts-announce/2025/08/msg00013.htmlSSVC — Action Prioritization
SSVCNo known exploitNot automatablePartial impact
SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.
CVSS
4.8MEDIUMmitre
Vector?
Quick Info
StatusMODIFIED
CWE
CWE-193
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