High severity7.5NVD Advisory· Published Apr 1, 2026· Updated Jun 5, 2026

CVE-2026-34874

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 Insight

LLM-synthesized narrative grounded in this CVE's description and references.

Affected products

Arm/MbedTLS3 versions
cpe:2.3:a:trustedfirmware:mbed_tls:*:*:*:*:*:*:*:*+ 2 more
- cpe:2.3:a:trustedfirmware:mbed_tls:*:*:*:*:*:*:*:*range: >=3.5.0,<3.6.6
- cpe:2.3:a:trustedfirmware:mbed_tls:4.0.0:*:*:*:*:*:*:*
- (no CPE)range: <=3.6.5, <=4.0.0
osv-coords4 versions
pkg:rpm/opensuse/mbedtls&distro=openSUSE%20Tumbleweed pkg:rpm/opensuse/ovmf&distro=openSUSE%20Tumbleweed pkg:rpm/suse/ovmf&distro=SUSE%20Linux%20Enterprise%20Server%2016.0 pkg:rpm/suse/ovmf&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20applications%2016.0
< 3.6.6-1.1+ 3 more
- (no CPE)range: < 3.6.6-1.1
- (no CPE)range: < 202602-9.1
- (no CPE)range: < 202502-160000.5.1
- (no CPE)range: < 202502-160000.5.1

Patches

Vulnerability mechanics

References

mbed-tls.readthedocs.io/en/latest/security-advisories/nvdVendor Advisory
mbed-tls.readthedocs.io/en/latest/security-advisories/mbedtls-security-advisory-2026-03-null-pointer-dereference-x509/nvdVendor Advisory

News mentions

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cvss	0.488
epss	0.000
exploit	0.000
kev	0.000
patch	-0.070
ransomware	0.000