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Vulnerability record · CVE-2007-4174 · published 7 August 2007

CVE-2007-4174: Tor permissions and access controls vulnerability

Tor · Tor

Tor before 0.1.2.16, when ControlPort is enabled, does not properly restrict commands to localhost port 9051, which allows remote attackers to modify the torrc configuration file, compromise anonymity, and have other unspecified impact via HTTP POST data containing commands without valid authentication, as demonstrated by an HTML form (1) hosted on a web site or (2) injected by a Tor exit node.

5.8 CVSS 2.0 Medium EPSS 6.2% · top 6.7% CWE-264 · Permissions and access controls
5.8CVSS 2.0 base score
6.2%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
18References
16 Jun 2026Last modified by NVD

Description

Tor before 0.1.2.16, when ControlPort is enabled, does not properly restrict commands to localhost port 9051, which allows remote attackers to modify the torrc configuration file, compromise anonymity, and have other unspecified impact via HTTP POST data containing commands without valid authentication, as demonstrated by an HTML form (1) hosted on a web site or (2) injected by a Tor exit node.

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

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://archives.seul.org/or/announce/Aug-2007/msg00000.html
http://archives.seul.org/or/announce/Sep-2007/msg00000.html
http://osvdb.org/36271
http://secunia.com/advisories/26301 Vendor Advisory
http://www.securityfocus.com/bid/25188
http://www.securitytracker.com/id?1018510
http://www.vupen.com/english/advisories/2007/2768 Vendor Advisory
https://exchange.xforce.ibmcloud.com/vulnerabilities/35784
https://exchange.xforce.ibmcloud.com/vulnerabilities/36407
http://archives.seul.org/or/announce/Aug-2007/msg00000.html
http://archives.seul.org/or/announce/Sep-2007/msg00000.html
http://osvdb.org/36271
http://secunia.com/advisories/26301 Vendor Advisory
http://www.securityfocus.com/bid/25188
http://www.securitytracker.com/id?1018510
http://www.vupen.com/english/advisories/2007/2768 Vendor Advisory
https://exchange.xforce.ibmcloud.com/vulnerabilities/35784
https://exchange.xforce.ibmcloud.com/vulnerabilities/36407

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2007-4174), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.