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CVE-2026-34874
Component Overview
Vulnerability Overview
Name
CVE-2026-34874
Source
NVD (
link
)
Debian (
link
)
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.
CWEs
CWE-476
Published Date
Apr 1, 2026
Updated Date
Jun 17, 2026
Workaround
-
Advisories
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
Analysis
#
Affected Component
Analysis
Vulnerability Ratings
#
7.5
CVSSv31
NaN
other
Others affected components
#
Name
Project
Project Version
Version
Status
mbedtls
buildroot
2025.02.x
3.6.6
Not Affected
mbedtls
buildroot
master
3.6.6
Not Affected
mbedtls
openwrt
master
3.6.7-r1
Not Affected
mbedtls
openwrt
openwrt-25.12
3.6.7-r1
Not Affected
mbedtls
yocto
master
3.6.7
Not Affected
mbedtls
yocto
scarthgap
2.28.10
Not Affected