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CVE-2009-0937

15
FAUCET Score

CVE-2009-0937 describes an unspecified denial-of-service vulnerability affecting Tor versions prior to 0.2.0.34, where directory mirrors could disrupt service through unknown means. With a CVSS score of 5.0, this vulnerability is network-exploitable with low attack complexity, requiring no authentication, and primarily impacts availability. There is no evidence of active exploitation, publicly available exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
<= 0.2.0.33CPE matchmatch criteria
cpe:2.3:a:tor:tor:*:*:*:*:*:*:*:*
0.2.0.1CPE matchmatch criteria
cpe:2.3:a:tor:tor:0.2.0.1:alpha:*:*:*:*:*:*
0.2.0.2CPE matchmatch criteria
cpe:2.3:a:tor:tor:0.2.0.2:alpha:*:*:*:*:*:*
0.2.0.3CPE matchmatch criteria
cpe:2.3:a:tor:tor:0.2.0.3:alpha:*:*:*:*:*:*
0.2.0.4CPE matchmatch criteria
cpe:2.3:a:tor:tor:0.2.0.4:alpha:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

5.0MEDIUM

AV:N/AC:L/Au:N/C:N/I:N/A:P

Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Exploitability Score
10.0
Impact Score
2.9
CvssVersion
2.0

Exploit Intelligence

EPSS Score
1.70%
Probability of exploitation in next 30 days
EPSS Percentile
74.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0170 is in the 60th percentile among its peer group of 23,725 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Vendor Advisories (1)

redhatCVE-2009-0937

tor: multiple security fixes in 0.2.0.34 (CVE-2009-0936, CVE-2009-0937, CVE-2009-0938, CVE-2009-0939)

References

archives.seul.org / or/announce/Feb-2009/msg00000.html
Patch
secunia.com / advisories/33880
Vendor Advisory
secunia.com / advisories/34583
security.gentoo.org / glsa/glsa-200904-11.xml
securityfocus.com / bid/33713