CVE-2026-34874

HIGH 7.5

CVSS Score

7.5

EPSS Score

0.0%

EPSS Percentile

0th

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.

Vendor	n/a
Product	n/a
Published	Apr 1, 2026
Last Updated	Apr 1, 2026

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Affected Versions

n/a / n/a

n/a

References

NVD ↗ CVE.org ↗ EPSS Data ↗

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