CVE-2023-27100
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...
- Published
- Mar 22, 2023
- Updated
- Feb 25, 2025
- Assigning CNA
- mitre
- Evidence observed
- Apr 8, 2023
Primary CVSS
nvd · CVSS 3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HLow · next 30 days
- Percentile
- 95.4%
- Model date
- Sep 21, 2026
EPSS is a statistical estimate, not a certainty or a measure of impact. Combine it with CVSS, KEV status, exposure and your environment.
Summary
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.
Sources
2- CVE-2023-27100Exploit
Exploit for CVE-2023-27100 bypassing pfSense anti-brute force protection via crafted X-Forwarded-For headers and anti-CSRF tokens to evade sshguard IP blocking.
FabDotNET · hardware · Apr 8, 2023
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