Is CVE-2007-4099 in the CISA KEV catalog?

No. CVE-2007-4099 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2007-4099?

CVE-2007-4099 has a CVSS v2 base score of 5.8 (MEDIUM).

What is the EPSS score for CVE-2007-4099?

CVE-2007-4099 has an EPSS score of 1.90% (77th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2007-4099?

Upgrade tor on debian 11 to 0.1.2.15-1 or later.

CVE & CISA-KEV Catalog

CVE-2007-4099

MEDIUMEPSS 77th pctl

5.8

CVSS v2

NVD

Description

Tor before 0.1.2.15 can select a guard node beyond the first listed never-before-connected-to guard node, which allows remote attackers with control of certain guard nodes to obtain sensitive information and possibly leverage further attacks.

How to fix

Remediation Available

torDebian

Fixed in:0.1.2.15-1CVE-2007-4099

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

1.90%probability of exploitation in 30 days

77thpercentile

Elevated risk: more likely to be exploited than 77% of all known CVEs.

References

Patch3

Other references2

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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 2026-04-23.