When was CVE-2012-4435 disclosed?

CVE-2012-4435 was first published in the National Vulnerability Database on October 22, 2012, with the most recent update on April 29, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2012-4435 actively exploited?

CVE-2012-4435 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 79.4% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

How do I remediate CVE-2012-4435?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2012-4435, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

CVE-2012-4435

NONECVSS 0.0

0.0

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.

CVSS v3: —
EG Score: 0.0(none)
EPSS: 79.4%
KEV: Not listed

References (14)

secalert@redhathttp://www.cipherdyne.org/blog/2012/09/software-release-fwknop-2.0.3.html
secalert@redhathttp://www.cipherdyne.org/cgi-bin/gitweb.cgi?p=fwknop.git%3Ba=commitdiff%3Bh=263fa01f2af1d336961df320f1c7a9ea84ddac9a
secalert@redhathttp://www.cipherdyne.org/cgi-bin/gitweb.cgi?p=fwknop.git%3Ba=commitdiff%3Bh=f4c16bc47fc24a96b63105556b62d61c1ba7d799
secalert@redhathttp://www.openwall.com/lists/oss-security/2012/09/19/2
secalert@redhathttp://www.openwall.com/lists/oss-security/2012/09/20/2
secalert@redhathttp://www.openwall.com/lists/oss-security/2012/09/20/4
secalert@redhathttps://exchange.xforce.ibmcloud.com/vulnerabilities/79568
af854a3a-2127-422b-91ae-364da2661108http://www.cipherdyne.org/blog/2012/09/software-release-fwknop-2.0.3.html
af854a3a-2127-422b-91ae-364da2661108http://www.cipherdyne.org/cgi-bin/gitweb.cgi?p=fwknop.git%3Ba=commitdiff%3Bh=263fa01f2af1d336961df320f1c7a9ea84ddac9a
af854a3a-2127-422b-91ae-364da2661108http://www.cipherdyne.org/cgi-bin/gitweb.cgi?p=fwknop.git%3Ba=commitdiff%3Bh=f4c16bc47fc24a96b63105556b62d61c1ba7d799
af854a3a-2127-422b-91ae-364da2661108http://www.openwall.com/lists/oss-security/2012/09/19/2
af854a3a-2127-422b-91ae-364da2661108http://www.openwall.com/lists/oss-security/2012/09/20/2
af854a3a-2127-422b-91ae-364da2661108http://www.openwall.com/lists/oss-security/2012/09/20/4
af854a3a-2127-422b-91ae-364da2661108https://exchange.xforce.ibmcloud.com/vulnerabilities/79568

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CVE-2012-4435

Published

Last Modified

References (14)

Weakness Classification(1)

Data Freshness Timeline

Frequently asked(4)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2012-4435?

Same CWE

CVE-2012-4435

📅 Published

🔄 Last Modified

🔗 References (14)

Weakness Classification(1)

Data Freshness Timeline

❓ Frequently asked(4)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2012-4435?

🔗 Related CVEs(same CWE)

Same CWE

Published

Last Modified

References (14)

Frequently asked(4)

Related CVEs(same CWE)