CVE-2009-0939
Tor before 0.2.0.34 treats incomplete IPv4 addresses as valid, which has unknown impact and...
CVE-2009-0939 is a high vulnerability (CVSS 10.0) in Tor, published March 18, 2009. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 2.05%, the 81st percentile. Fixed in tor 0.2.0.34-1.
Tor before 0.2.0.34 treats incomplete IPv4 addresses as valid, which has unknown impact and attack vectors related to "Spec conformance," as demonstrated using 192.168.0.
Exploit likelihood
What each source reports
NVD Score used
Tor before 0.2.0.34 treats incomplete IPv4 addresses as valid, which has unknown impact and attack vectors related to "Spec conformance," as demonstrated using 192.168.0.
- Record
CVE-2009-0939- CVSS 2.0
- 10.0 High
AV:N/AC:L/Au:N/C:C/I:C/A:C - Updated
- 2026-11-02
CVE List No score
Tor before 0.2.0.34 treats incomplete IPv4 addresses as valid, which has unknown impact and attack vectors related to "Spec conformance," as demonstrated using 192.168.0.
- Record
CVE-2009-0939- Updated
- 2026-11-02
EUVDEUVD-2009-0936 No score
Tor before 0.2.0.34 treats incomplete IPv4 addresses as valid, which has unknown impact and attack vectors related to "Spec conformance," as demonstrated using 192.168.0.
- Record
EUVD-2009-0936- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-4v97-9crm-p348 No score
Tor before 0.2.0.34 treats incomplete IPv4 addresses as valid, which has unknown impact and...
Tor before 0.2.0.34 treats incomplete IPv4 addresses as valid, which has unknown impact and attack vectors related to "Spec conformance," as demonstrated using 192.168.0.
- Record
GHSA-4v97-9crm-p348- Updated
- 2026-11-02
OSV No score
Tor before 0.2.0.34 treats incomplete IPv4 addresses as valid, which has unknown impact and attack vectors related to "Spec conformance," as demonstrated using 192.168.0.
- Record
CVE-2009-0939- Updated
- 2026-11-02
OSVDEBIAN-CVE-2009-0939 No score
Tor before 0.2.0.34 treats incomplete IPv4 addresses as valid, which has unknown impact and attack vectors related to "Spec conformance," as demonstrated using 192.168.0.
- Record
DEBIAN-CVE-2009-0939- Updated
- 2026-11-02
Affected products
Affected packages
History
| When | Changed | Sources |
|---|---|---|
| 2026-11-03 | aliases | EUVD |
| 2026-11-02 | created | CVE List, GitHub Advisories, NVD, OSV |
References
secunia.com/advisories/34583
archives.seul.org/or/announce/Feb-2009/msg00000.html
securityfocus.com/bid/33713
security.gentoo.org/glsa/glsa-200904-11.xml
nvd.nist.gov/vuln/detail/CVE-2009-0939
github.com/advisories/GHSA-4v97-9crm-p348
security-tracker.debian.org/tracker/CVE-2009-0939