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CVE-2012-3519

18
FAUCET Score

CVE-2012-3519 describes a timing side-channel vulnerability in Tor versions prior to 0.2.2.38. This flaw allowed remote attackers to infer information about relay selection by observing variations in the time taken for relay-list iteration. With a CVSS score of 5.0, this vulnerability is of medium severity, requiring no authentication and having a low attack complexity, potentially leading to information disclosure. There is no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
<= 0.2.2.37CPE matchmatch criteria
cpe:2.3:a:tor:tor:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

5.0MEDIUM

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

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

Exploit Intelligence

EPSS Score
2.42%
Probability of exploitation in next 30 days
EPSS Percentile
82.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.0242 is in the 73rd percentile among its peer group of 23,701 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

Remediation records are not available for this CVE.

References

lists.opensuse.org / opensuse-updates/2012-08/msg00048.html
openwall.com / lists/oss-security/2012/08/21/6
secunia.com / advisories/50583
security.gentoo.org / glsa/glsa-201301-03.xml
gitweb.torproject.org / tor.git/commit/308f6dad20675c42b29862f4269ad1fbfb00dc9a
gitweb.torproject.org / tor.git/commit/d48cebc5e498b0ae673635f40fc57cdddab45d5b
lists.torproject.org / pipermail/tor-announce/2012-August/000086.html
trac.torproject.org / projects/tor/ticket/6537