CVE-2026-34874

7.5 HIGH

Published: April 01, 2026 Modified: April 03, 2026

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.

AI Explanation

Get an AI-powered plain-language explanation of this vulnerability and remediation steps.

CVSS v3.x Details

0.0 Low Medium High Critical 10.0

Vector String

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

References to Advisories, Solutions, and Tools

Patch Vendor Advisory Exploit Third Party Advisory

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

2 reference(s) from NVD

Quick Stats

CVSS v3 Score

7.5 / 10.0

EPSS (Exploit Probability)

0.1%

22th percentile

Exploitation Status

Not in CISA KEV

Weaknesses (CWE)

CWE-476

Affected Vendors

arm

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