AUGUST 4, 2026
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Case File

CVE-2021-4234

HIGH · CVSS 7.5 EPSS 0.85%

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2022-07-06 · Last synced 2026-08-04

CyberRota Analysis

This is a high severity vulnerability with a CVSS score of 7.5. See the original NVD description below for full technical details.

CVE
CVE-2021-4234
Severity
HIGH
CVSS
7.5
EPSS
0.85%

Original NVD Description

OpenVPN Access Server 2.10 and prior versions are susceptible to resending multiple packets in a response to a reset packet sent from the client which the client again does not respond to, resulting in a limited amplification attack.

Related CVEs

Other vulnerabilities affecting the same vendor(s)