CVE-2021-31606

Exploitation

Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.

SSVC decision

Not assessed by CISA

EPSS probability

2.55% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 83.6% of scored records. A rank, not a probability.

NVD base score

7.5 (CVSS v3.x), scored by the NVD independently of the CNA.

NVD CVSS vector

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

NVD analysis status

Modified. NVD last modified this record on 2026-06-17.

Red Hat severity

No Red Hat rating. Red Hat rates the CVEs that affect its products.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

Published

2021-09-27 00:00Z4 YR AGO

Last updated

2024-08-03 23:03Z2 YR AGO

Reserved

2021-04-23

Assigning CNA

mitre

Record state

PUBLISHED

Severity

Not rated by the issuing CNA

CNA CVSS vector

Not published by the issuing CNA

Weaknesses

• CWE-287Improper AuthenticationClass

Data version

5.1

Document digest

1ced62f5d6398a435017c6da943b23347baf67635d83cba738e1e0066e6b69f5

• github.comhttps://github.com/furlongm/openvpn-monitor/releases
• packetstormsecurity.comhttp://packetstormsecurity.com/files/164274/OpenVPN-Monitor-1.1.3-Authorization-Bypass-Denial-Of-Service.html
• github.comhttps://github.com/furlongm/openvpn-monitor/commit/ddb9d31ef0ec56f578bdacf99ebe9d68455ed8ca