9.8

CVE-2023-27100: netgate pfsense_plus

CVSS: 9.8v3.1CriticalModified
Published 22-03-2023Last modified 25-02-2025
Open JSON

Vulnerability summary

CVE-2023-27100 is a critical (CVSS 9.8) vulnerability in netgate pfsense_plus. EPSS estimates a 9.84% chance of exploitation in the next 30 days, higher than 95.5% of scored vulnerabilities. 2 public exploits are recorded.

Overall risk
70/100
0100
High · default modelHow is this calculated?
CVSS score
9.8/10
010
Critical · v3.1 (CVE.org)
EPSS score
9.84%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits2reference, exploit-database

Timeline

  1. 22-03-2023
    PublishedVulnerability first disclosed.
  2. 25-02-2025
    Last modifiedVulnerability information updated.

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.

CVSS metrics

2 scores · 2 sources · 1 version

EPSS trend

Probability

9.84%

Chance of exploitation in the next 30 days

Percentile

96%

Versus all other CVEs

30-day change

0.00 pp

From 9.84% on 21-09-2026

21-09-202621-10-2026
EPSS score
9.84%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

2 found
  • referenceUnverified

    Exploit Reference (packetstorm.news)

    Maturity: unknown

  • exploit-databaseremotehardwareUnverified

    pfsenseCE v2.6.0 - Anti-brute force protection bypass

    Maturity: poc

Weaknesses

CWE · root cause

Affected systems

Netgate1 product
Pfsense1 product

2 vendors · 2 products

References

4 links