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CVE-2023-27100

CRITICALCVSS 9.8/10EPSS 9.84%

Last modified

CVE-2023-27100 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. 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.. EPSS estimates a 9.84% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1
9.8/10

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

EPSS Probability
9.84%

95.0th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
NetgatePfsense Plus22.05.1
PfsensePfsense2.6.0

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is 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 allows attackers to bypass brute force protection mechanisms via crafted web requests.
How severe is CVE-2023-27100?
CVE-2023-27100 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 9.84% probability of exploitation in the next 30 days.
How do I fix CVE-2023-27100?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2023-27100?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST