CVE-2007-4099
CVE-2007-4099 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.
Key facts
- Severity: Medium (CVSS 2.0 base score 5.8)
- EPSS exploit prediction: 2% (77th percentile)
- Actively exploited: Not listed in CISA KEV
- Affected product: Tor
- Published:
- Last modified:
Description
Tor before 0.1.2.15 can select a guard node beyond the first listed never-before-connected-to guard node, which allows remote attackers with control of certain guard nodes to obtain sensitive information and possibly leverage further attacks.
Frequently asked questions
- What is CVE-2007-4099?
- Tor before 0.1.2.15 can select a guard node beyond the first listed never-before-connected-to guard node, which allows remote attackers with control of certain guard nodes to obtain sensitive information and possibly leverage further attacks.
- How severe is CVE-2007-4099?
- CVE-2007-4099 has a CVSS 2.0 base score of 5.8, rated medium severity.
- Is CVE-2007-4099 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (77th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2007-4099?
- CVE-2007-4099 primarily affects Tor. In total, 15 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
- How do I fix CVE-2007-4099?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
- When was CVE-2007-4099 published?
- CVE-2007-4099 was published on 2007-07-30 and last updated on 2026-06-16.
References
- http://archives.seul.org/or/announce/Jul-2007/msg00000.html
- http://osvdb.org/46971
- http://secunia.com/advisories/26140
- http://www.securityfocus.com/bid/25035
- http://www.vupen.com/english/advisories/2007/2634
Affected products (15)
- cpe:2.3:a:tor:tor:0.1.0.10:*:*:*:*:*:*:*
- cpe:2.3:a:tor:tor:0.1.0.11:*:*:*:*:*:*:*
- cpe:2.3:a:tor:tor:0.1.0.12:*:*:*:*:*:*:*
- cpe:2.3:a:tor:tor:0.1.0.13:*:*:*:*:*:*:*
- cpe:2.3:a:tor:tor:0.1.0.14:*:*:*:*:*:*:*
- cpe:2.3:a:tor:tor:0.1.0.18:*:*:*:*:*:*:*
- cpe:2.3:a:tor:tor:0.1.1.1_alpha:*:*:*:*:*:*:*
- cpe:2.3:a:tor:tor:0.1.1.2_alpha:*:*:*:*:*:*:*
- cpe:2.3:a:tor:tor:0.1.1.3_alpha:*:*:*:*:*:*:*
- cpe:2.3:a:tor:tor:0.1.1.4_alpha:*:*:*:*:*:*:*
- cpe:2.3:a:tor:tor:0.1.1.5_alpha:*:*:*:*:*:*:*
- cpe:2.3:a:tor:tor:0.1.1.20:*:*:*:*:*:*:*
- cpe:2.3:a:tor:tor:0.1.1.23:*:*:*:*:*:*:*
- cpe:2.3:a:tor:tor:0.1.2.1_alpha-cvs:*:*:*:*:*:*:*
- cpe:2.3:a:tor:tor:0.1.2.14:*:*:*:*:*:*:*
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