Vulnerability DatabaseCVE-2025-52497
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CVE-2025-52497
July 04, 2025
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
https://github.com/Mbed-TLS/mbedtls.git (GITHUB):
Affected version(s) >=v2.7.16 <v3.6.4
Fix Suggestion:
Update to version v3.6.4
Related Resources (4)
https://security.alpinelinux.org/vuln/CVE-2025-52497
https://lists.debian.org/debian-lts-announce/2025/08/msg00013.html
https://github.com/Mbed-TLS/mbedtls-docs/blob/main/security-advisories/mbedtls-security-advisory-2025-06-2.md
https://security-tracker.debian.org/tracker/CVE-2025-52497
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CVSS v4
Base Score:
6.3
Attack Vector
NETWORK
Attack Complexity
HIGH
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
NONE
Vulnerable System Confidentiality
LOW
Vulnerable System Integrity
NONE
Vulnerable System Availability
LOW
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
4.8
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
LOW
Integrity
NONE
Availability
LOW
Weakness Type (CWE)
Off-by-one Error
CWE-193
EPSS
Base Score:
0.08