CVE-2023-27100

critical

Description

Improper restriction of excessive authentication attempts in the SSHGuard component of Netgate pfSense Plus software v22.05.1 and pfSense CE software v2.6.0 allows attackers to bypass brute force protection mechanisms via crafted web requests.

References

https://redmine.pfsense.org/issues/13574

https://packetstorm.news/files/id/171791

https://docs.netgate.com/downloads/pfSense-SA-23_05.sshguard.asc

http://packetstormsecurity.com/files/171791/pfsenseCE-2.6.0-Protection-Bypass.html

Details

Source: Mitre, NVD

Published: 2023-03-22

Updated: 2026-06-17

Risk Information

CVSS v2

Base Score: 10

Vector: CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C

Severity: Critical

CVSS v3

Base Score: 9.8

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