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CVE-2025-52497

Good to know:

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Date: July 3, 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.

Severity Score

Related Resources (5)

https://nvd.nist.gov/vuln/detail/CVE-2025-52497
https://github.com/Mbed-TLS/mbedtls-docs/blob/main/security-advisories/mbedtls-security-advisory-2025-06-2.md
https://security.alpinelinux.org/vuln/CVE-2025-52497
https://security-tracker.debian.org/tracker/CVE-2025-52497
https://www.mend.io/vulnerability-database/CVE-2025-52497

Severity Score

Weakness Type (CWE)

Off-by-one Error

CWE-193

Top Fix

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Upgrade Version

Upgrade to version https://github.com/Mbed-TLS/mbedtls.git - v3.6.4

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CVSS v3.1

Base Score:
Attack Vector (AV): NETWORK
Attack Complexity (AC): HIGH
Privileges Required (PR): NONE
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): LOW
Integrity (I): NONE
Availability (A): LOW

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