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CVE-2006-6893

15
FAUCET Score

CVE-2006-6893 describes a side-channel vulnerability in Tor that allows remote attackers to potentially discover the IP address of a hidden service. This is achieved by observing changes in CPU temperature, induced by high-rate access to the hidden service, which in turn affects timing patterns in ICMP timestamps, TCP sequence numbers, and TCP timestamps. The vulnerability has a CVSS score of 5.0 (medium severity) with a low attack complexity and no authentication required, primarily impacting confidentiality. There is no known exploit intelligence, active exploitation, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
0.1.1.26CPE matchmatch criteria
cpe:2.3:a:tor:tor:0.1.1.26:*:*:*:*:*:*:*

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
2.11%
Probability of exploitation in next 30 days
EPSS Percentile
79.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0211 is in the 69th 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

Remediation records are not available for this CVE.

References

events.ccc.de / congress/2006/Fahrplan/events/1513.en.html
cl.cam.ac.uk / ~sjm217/papers/ccs06hotornot.pdf
Exploit
lightbluetouchpaper.org / 2006/09/04/hot-or-not-revealing-hidden-services-by-their-clock-skew