CVE-2026-34874

Published: Apr 1, 2026Modified: Jun 17, 2026

7.5

Vector

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

Exploitability: 3.9 / Impact: 3.6

Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0 (Secondary)

Description

An issue was discovered in Mbed TLS through 3.6.5 and 4.x through 4.0.0. There is a NULL pointer dereference in distinguished name parsing that allows an attacker to write to address 0.

Affected (2)

Products: Trustedfirmware: Mbed Tls

Trustedfirmware

1 product

Mbed Tls

Configuration A

2 vulnerable

Vulnerable Software	Affected Versions
Trustedfirmware Mbed Tls	From 3.5.0 to 3.6.6
Trustedfirmware Mbed Tls	Version 4.0.0

Related CWEs

CWE-476

NULL Pointer Dereference

The product dereferences a pointer that it expects to be valid but is NULL.

References (2)

https://mbed-tls.readthedocs.io/en/latest/security-advisories/

Source: cve@mitre.org

Vendor Advisory

https://mbed-tls.readthedocs.io/en/latest/security-advisories/mbedtls-security-advisory-2026-03-null-pointer-dereference-x509/

Source: cve@mitre.org

Vendor Advisory

Timeline

No history available yet.