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TI-2023-11923 Aliases CVE-2023-27100GHSA-wmh3-5pfq-qpp8

Improper restriction of excessive authentication attempts in the SSHGuard component of…

Priority HIGH 82CWE-307Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Security bypass
Confidentiality · integrity · availability
High · High · High
Fix status
No fix listed

Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA. Impact type from CWE-307.

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.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.09924 95th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
Yes
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
——all versions—No fix listedCNA
  • — Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 2

CPEVersionsRoleVendor
cpe:2.3:a:netgate:pfsense_plus:22.05.1:*:*:*:*:*:*:*22.05.1VulnerableNetgate
cpe:2.3:a:pfsense:pfsense:2.6.0:*:*:*:community:*:*:*2.6.0VulnerablepfSense
  • cpe:2.3:a:netgate:pfsense_plus:22.05.1:*:*:*:*:*:*:* Versions 22.05.1 Vulnerable ·Netgate
  • cpe:2.3:a:pfsense:pfsense:2.6.0:*:*:*:community:*:*:* Versions 2.6.0 Vulnerable ·pfSense

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2023-27100
  2. 2026-10-03 Alias added: GHSA-wmh3-5pfq-qpp8

References

Patch 1

Advisory 1

Other 1

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences