Is CVE-2009-2426 in the CISA KEV catalog?

No. CVE-2009-2426 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2009-2426?

CVE-2009-2426 has a CVSS v2 base score of 5.0 (MEDIUM).

What is the EPSS score for CVE-2009-2426?

CVE-2009-2426 has an EPSS score of 1.92% (77th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2009-2426?

Upgrade tor on debian 11 to 0.2.0.35-1 or later.

CVE & CISA-KEV Catalog

CVE-2009-2426

MEDIUMEPSS 77th pctl

5.0

CVSS v2

NVD

Description

The connection_edge_process_relay_cell_not_open function in src/or/relay.c in Tor 0.2.x before 0.2.0.35 and 0.1.x before 0.1.2.8-beta allows exit relays to have an unspecified impact by causing controllers to accept DNS responses that redirect to an internal IP address via unknown vectors. NOTE: some of these details are obtained from third party information.

How to fix

Remediation Available

torDebian

Fixed in:0.2.0.35-1CVE-2009-2426

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

1.92%probability of exploitation in 30 days

77thpercentile

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

References

Patch4

Vendor Advisory1

secunia.com

Other references1

exchange.xforce.ibmcloud.com

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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.