CVE-2012-4435

Name: CVE-2012-4435
Creator: NVD / NIST
Published: 2012-10-22T23:55:07.07+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 2.33%

Last modified Jun 16, 2026

CVE-2012-4435 is a vulnerability of currently unknown severity. fwknop before 2.0.3 does not properly validate IP addresses, which allows remote authenticated users to cause a denial of service (server crash) via a long IP address.. EPSS estimates a 2.33% chance of exploitation in the next 30 days.

Description

fwknop before 2.0.3 does not properly validate IP addresses, which allows remote authenticated users to cause a denial of service (server crash) via a long IP address.

Metrics

EPSS Probability

2.33%

81.3th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-20

Affected Software

Vendor	Product	Versions
Cipherdyne	Fwknop	<= 2.0.2
Cipherdyne	Fwknop	2.0
Cipherdyne	Fwknop	2.0.1

References

Timeline

Published: Oct 22, 2012
Last Modified: Jun 16, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2012-4435?

fwknop before 2.0.3 does not properly validate IP addresses, which allows remote authenticated users to cause a denial of service (server crash) via a long IP address.

How severe is CVE-2012-4435?

Severity scoring for CVE-2012-4435 is pending analysis. The EPSS model estimates a 2.33% probability of exploitation in the next 30 days.

How do I fix CVE-2012-4435?

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-2012-4435?

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

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Source: NVD / NIST