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Case File

CVE-2021-34433

HIGH · CVSS 7.5 EPSS 0.34%

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2021-08-20 · Last synced 2026-08-04

CyberRota Analysis

This is a high severity vulnerability with a CVSS score of 7.5. It affects Exchange.

CVE
CVE-2021-34433
Severity
HIGH
CVSS
7.5
EPSS
0.34%
Exchange

Original NVD Description

In Eclipse Californium version 2.0.0 to 2.6.4 and 3.0.0-M1 to 3.0.0-M3, the certificate based (x509 and RPK) DTLS handshakes accidentally succeeds without verifying the server side's signature on the client side, if that signature is not included in the server's ServerKeyExchange.

Related CVEs

Other vulnerabilities affecting the same vendor(s)