Is CVE-2009-2426 being actively exploited?

CVE-2009-2426 is not currently listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.

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

CVE-2009-2426 has a CVSS 2.0 base score of 5.0 (MEDIUM).

CVE-2009-2426

MEDIUM · CVSS 5.0EPSS 1.9%EU EUVD

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.

Key facts

CVSS score: 5.0 (v2.0)
Severity: MEDIUM
CVSS vector: AV:N/AC:L/Au:N/C:N/I:N/A:P
EPSS score: 1.9% (80th percentile)
In CISA KEV: No
In EU EUVD: Yes (EUVD-2009-2421)
Published: July 10, 2009
NVD last modified: June 16, 2026
Status: Modified

EU Vulnerability Database (EUVD)

This vulnerability is also tracked by ENISA as EUVD-2009-2421 in the EU Vulnerability Database. Last updated in EUVD on August 7, 2024.

View on the EU Vulnerability Database

Affected products

tor / tor
tor / tor
tor / tor
tor / tor
tor / tor
tor / tor
tor / tor
tor / tor
tor / tor
tor / tor
tor / tor
tor / tor
tor / tor
tor / tor
tor / tor
tor / tor
tor / tor
tor / tor
tor / tor
tor / tor
tor / tor
tor / tor
tor / tor
tor / tor
tor / tor
tor / tor
tor / tor
tor / tor
tor / tor
tor / tor
tor / tor
tor / tor
tor / tor
tor / tor
tor / tor
tor / tor
tor / tor
tor / tor
tor / tor
tor / tor
tor / tor
tor / tor
tor / tor
tor / tor
tor / tor
tor / tor
tor / tor
tor / tor
tor / tor
tor / tor

and 45 more…

References

http://archives.seul.org/or/announce/Jun-2009/msg00000.html(Patch)
http://secunia.com/advisories/35546(Vendor Advisory)
http://www.osvdb.org/55341(Patch)
http://www.securityfocus.com/bid/35505(Patch)
http://www.vupen.com/english/advisories/2009/1716(Patch, Vendor Advisory)
https://exchange.xforce.ibmcloud.com/vulnerabilities/51377

Last updated September 17, 2026 · Source: NVD, CISA KEV, FIRST.org EPSS

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