CVE-2023-27100 | BDVDB-2026-197900 Detail

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.

Impact#

Per CVSS v3.1: confidentiality impact high, integrity impact high, availability impact high. Attack vector: network.

Weaknesses#

CWE-307 Improper Restriction of Excessive Authentication Attempts

References#

Exploit#

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

History#

Version 12023-03-22Record published in the CVE List.
Version 22025-02-25Most recent update recorded in the CVE List.

Published

Published: 2023-03-22
Last modified: 2025-02-25

Vendor information

Vendor: Not stated
Product: Not stated

Score

9.8 Critical

EPSS

9.9%, Low

Estimated chance of exploitation in the next 30 days. EPSS percentile: 95.6.

KEV

Not listed in the CISA Known Exploited Vulnerabilities catalog.

Impact

Not classified

Action

No specific action is recorded in the source data. Check the references for vendor guidance.

Affected Systems

No version data in the source record.

Scoring System

CVSS v4.0

Not available

CVSS v3.1

9.8 Critical

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

Metric breakdown
Attack Vector	Network
Attack Complexity	Low
Privileges Required	None
User Interaction	None
Scope	Unchanged
Confidentiality	High
Integrity	High
Availability	High

CVSS v3.0

Not available

CVSS v2

Not available

Source: CVE List v5 (record); CISA KEV (kev, action); FIRST EPSS (epss).