CVE-2025-48965

MEDIUM

Mbed TLS <3.6.4 - Memory Corruption

Title source: llm

Description

Mbed TLS before 3.6.4 has a NULL pointer dereference because mbedtls_asn1_store_named_data can trigger conflicting data with val.p of NULL but val.len greater than zero.

References (3)

[Mitigation, Third Party Advisory] https://github.com/Mbed-TLS/mbedtls-docs/blob/main/security-advisories/mbedtls-security-advisory-2025-06-6.md

View Writeup ZIP pw:eip

[Vendor Advisory] https://mbed-tls.readthedocs.io/en/latest/tech-updates/security-advisories/

[Mailing List] https://lists.debian.org/debian-lts-announce/2025/08/msg00013.html

Scores

CVSS v3 4.0

EPSS 0.0003

EPSS Percentile 8.3%

Attack Vector NETWORK

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:N/A:L

Classification

CWE

CWE-476 CWE-696

Status published

Affected Products (1)

arm/mbed_tls < 3.6.4

Timeline

Published Jul 20, 2025

Tracked Since Feb 18, 2026