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.

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Fixes

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History

Wed, 01 Apr 2026 23:45:00 +0000

Type Values Removed Values Added
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.
Weaknesses CWE-476
References
Metrics cvssV3_1

{'score': 7.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'}

ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


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cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

Published:

Updated: 2026-04-01T19:24:08.049Z

Reserved: 2026-03-31T00:00:00.000Z

Link: CVE-2026-34874

cve-icon Vulnrichment

Updated: 2026-04-01T19:24:03.915Z

cve-icon NVD

Status : Received

Published: 2026-04-01T19:16:33.390

Modified: 2026-04-01T20:16:27.673

Link: CVE-2026-34874

cve-icon Redhat

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cve-icon OpenCVE Enrichment

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Weaknesses