CVE-2026-34874

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.

CVSS v3 7.5 HIGH

7.5^/10

CVSS v3 : HIGH

Vector :

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

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

Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:trustedfirmware:mbed_tls::::::::
	cpe:2.3:a:trustedfirmware:mbed_tls:4.0.0:::::::*

History

No history.

Information

Published : 2026-04-01 19:16

Updated : 2026-06-17 10:39

NVD link : CVE-2026-34874

Mitre link : CVE-2026-34874

CVE.ORG link : CVE-2026-34874

JSON object : View

Products Affected

trustedfirmware

mbed_tls

CWE

CWE-476

NULL Pointer Dereference

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