How severe is CVE-2007-4174?

CVE-2007-4174 has a CVSS 2.0 base score of 5.8, rated medium severity.

Is CVE-2007-4174 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 6% (93rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2007-4174?

CVE-2007-4174 primarily affects Tor. In total, 16 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2007-4174?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2007-4174 published?

CVE-2007-4174 was published on 2007-08-07 and last updated on 2026-06-16.

CVE-2007-4174

CVE-2007-4174 is a medium-severity vulnerability in Tor with a CVSS 2.0 base score of 5.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-264.

Key facts

Severity: Medium (CVSS 2.0 base score 5.8)
EPSS exploit prediction: 6% (93rd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-264
Affected product: Tor
Published: 2007-08-07
Last modified: 2026-06-16

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.

Frequently asked questions

What is CVE-2007-4174?: 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.
How severe is CVE-2007-4174?: CVE-2007-4174 has a CVSS 2.0 base score of 5.8, rated medium severity.
Is CVE-2007-4174 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 6% (93rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2007-4174?: CVE-2007-4174 primarily affects Tor. In total, 16 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2007-4174?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2007-4174 published?: CVE-2007-4174 was published on 2007-08-07 and last updated on 2026-06-16.

References

Affected products (16)

cpe:2.3:a:tor:tor:*:*:*:*:*:*:*:*
cpe:2.3:a:tor:tor:0.1.2.1:alpha:*:*:*:*:*:*
cpe:2.3:a:tor:tor:0.1.2.2:*:*:*:*:*:*:*
cpe:2.3:a:tor:tor:0.1.2.3:alpha:*:*:*:*:*:*
cpe:2.3:a:tor:tor:0.1.2.4:*:*:*:*:*:*:*
cpe:2.3:a:tor:tor:0.1.2.5:*:*:*:*:*:*:*
cpe:2.3:a:tor:tor:0.1.2.5:alpha:*:*:*:*:*:*
cpe:2.3:a:tor:tor:0.1.2.6:alpha:*:*:*:*:*:*
cpe:2.3:a:tor:tor:0.1.2.7:alpha:*:*:*:*:*:*
cpe:2.3:a:tor:tor:0.1.2.8:beta:*:*:*:*:*:*
cpe:2.3:a:tor:tor:0.1.2.9:*:*:*:*:*:*:*
cpe:2.3:a:tor:tor:0.1.2.10:*:*:*:*:*:*:*
cpe:2.3:a:tor:tor:0.1.2.11:*:*:*:*:*:*:*
cpe:2.3:a:tor:tor:0.1.2.12:*:*:*:*:*:*:*
cpe:2.3:a:tor:tor:0.1.2.13:*:*:*:*:*:*:*
cpe:2.3:a:tor:tor:0.1.2.14:*:*:*:*:*:*:*

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