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CVE-2017-0375

20
FAUCET Score

CVE-2017-0375 describes a denial-of-service vulnerability in Tor versions prior to 0.3.0.8, specifically impacting its hidden-service feature. An unauthenticated attacker can trigger an assertion failure and daemon exit by sending a malformed BEGIN cell to the relay_send_end_cell_from_edge_ function. This vulnerability carries a CVSS v3 score of 7.5 (High), indicating a network-based attack with low complexity and high availability impact. While the vulnerability is significant, there is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or notable community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
< 0.3.0.8CPE matchmatch criteria
cpe:2.3:a:torproject:tor:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

7.5HIGH

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
3.6
CvssVersion
3.0

Exploit Intelligence

EPSS Score
2.61%
Probability of exploitation in next 30 days
EPSS Percentile
83.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0261 is in the 71st percentile among its peer group of 51,506 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, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (1)

github_advisorypatch availablevia nvd_reference
View patch

References

github.com / torproject/tor/commit/79b59a2dfcb68897ee89d98587d09e55f07e68d7
Issue TrackingPatchVendor Advisory
lists.torproject.org / pipermail/tor-announce/2017-June/000131.html
Mailing ListThird Party Advisory
trac.torproject.org / projects/tor/ticket/22493
Issue Tracking
securityfocus.com / bid/99017
Third Party AdvisoryVDB Entry