Is CVE-2012-4419 in the CISA KEV catalog?

No. CVE-2012-4419 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2012-4419?

CVE-2012-4419 has a CVSS v2 base score of 5.0 (MEDIUM).

What is the EPSS score for CVE-2012-4419?

CVE-2012-4419 has an EPSS score of 2.16% (80th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2012-4419?

Upgrade tor on debian 11 to 0.2.3.22-rc-1 or later.

CVE & CISA-KEV Catalog

CVE-2012-4419

MEDIUMEPSS 80th pctl

5.0

CVSS v2

NVD

Description

The compare_tor_addr_to_addr_policy function in or/policies.c in Tor before 0.2.2.39, and 0.2.3.x before 0.2.3.21-rc, allows remote attackers to cause a denial of service (assertion failure and daemon exit) via a zero-valued port field that is not properly handled during policy comparison.

How to fix

Remediation Available

torDebian

Fixed in:0.2.3.22-rc-1CVE-2012-4419

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v2 Vector

No CVSS vector data available.

Exploit Intelligence

2.16%probability of exploitation in 30 days

80thpercentile

Elevated risk: more likely to be exploited than 80% of all known CVEs.

References

Other references9

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-04-29.