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CVE-2026-34874

7.5 HIGH

An issue was discovered in Mbed TLS through 3.6.5 and 4.x through 4.0.0

Published: 2026-04-01 · Last updated: 2026-06-05

Severity and scoring

CVSS
7.5 HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CWE
CWE-476

Affected products

VendorProduct
trustedfirmwarembed_tls

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.

Source: NVD

References

Related CVEs

Same vendor

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  • CVE-2026-40290 — OP-TEE is a Trusted Execution Environment (TEE) designed as companion to a non-secure Linux kernel running on Arm; Cortex-A cores using t... (7.8 HIGH)
  • CVE-2026-33662 — OP-TEE is a Trusted Execution Environment (TEE) designed as companion to a non-secure Linux kernel running on Arm; Cortex-A cores using t... (7.5 HIGH)
  • CVE-2026-33317 — OP-TEE is a Trusted Execution Environment (TEE) designed as companion to a non-secure Linux kernel running on Arm; Cortex-A cores using t... (8.7 HIGH)

Same CWE

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  • CVE-2025-55649 — A NULL pointer dereference in the gf_media_map_esd function (media_tools/isom_tools.c) of GPAC MP4Box v2.4 allows attackers to cause a De... (5.5 MEDIUM)
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