CVE-2021-4234 - CVE House
Back to Database
Status published High CVE-2021-4234

OpenVPN Access Server 2.10 and prior versions are susceptible to...

Vulnerability 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.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

THREAT MONITOR

Am I Vulnerable?

Launch our assessment wizard to check if your infrastructure is exposed to • CVE-2021-4234

Credits & Attribution

No credits recorded in the NVD database.

Affected Vendor

Affected Software

OpenVPN Access Server
Vulnerable Versions:
2.10 and prior version

Timeline

Official Publish: July 6th, 2022
Last Modified: August 3rd, 2024
Added to House: July 21st, 2026

CVSS Vectors

V3: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Weaknesses (CWE)

MITRE ATT&CK TTPs

No associated TTPs found for this vulnerability.