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CVE-2009-0936

16
FAUCET Score

CVE-2009-0936 describes an unspecified vulnerability in Tor versions prior to 0.2.0.34. Attackers can exploit this flaw by submitting "corrupt votes," leading to a denial of service through an infinite loop. The vulnerability has a CVSS score of 5.0, indicating a medium severity with a network attack vector, low complexity, and potential for partial availability impact. 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
1.71%
Probability of exploitation in next 30 days
EPSS Percentile
75.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0171 is in the 61st percentile among its peer group of 23,723 CVEs.

Social Chatter

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-2009-0936

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