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Critical severity9.1NVD Advisory· Published Apr 1, 2026· Updated Apr 7, 2026

CVE-2026-34873

CVE-2026-34873

Description

An issue was discovered in Mbed TLS 3.5.0 through 4.0.0. Client impersonation can occur while resuming a TLS 1.3 session.

Affected products

1

Arm/Mbed Tls
cpe:2.3:a:arm:mbed_tls:*:*:*:*:*:*:*:*
Range: >=3.5.0,<3.6.6

Patches

0

No patches discovered yet.

Vulnerability mechanics

AI mechanics synthesis has not run for this CVE yet.

References

2

mbed-tls.readthedocs.io/en/latest/security-advisories/nvdVendor Advisory
mbed-tls.readthedocs.io/en/latest/security-advisories/mbedtls-security-advisory-2026-03-client-impersonation-while-resuming-tls13-session/nvdVendor Advisory

News mentions

0

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