What’s Vulnerable › Vulnerabilities

CVE-2011-4897

• Severity: medium (CVSS 4.3 v2.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.5% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2011-12-23 · updated 2026-06-16
• Weakness: CWE-200

Description

Tor before 0.2.2.25-alpha, when configured as a relay without the Nickname configuration option, uses the local hostname as the Nickname value, which allows remote attackers to obtain potentially sensitive information by reading this value.

Affected products

• Tor: through 0.2.2.24; 0.0.2, 0.0.3, 0.0.4, 0.0.5, 0.0.6, 0.0.6.1 (+220)

References

• https://blog.torproject.org/blog/tor-02225-alpha-out
• https://blog.torproject.org/blog/tor-02225-alpha-out

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