What’s Vulnerable › Vulnerabilities
CVE-2001-1155
- Severity: critical (CVSS 9.8 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 2.0% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2001-08-23 · updated 2026-06-16
- Weakness: CWE-863
Description
TCP Wrappers (tcp_wrappers) in FreeBSD 4.1.1 through 4.3 with the PARANOID ACL option enabled does not properly check the result of a reverse DNS lookup, which could allow remote attackers to bypass intended access restrictions via DNS spoofing.
Affected products
- FreeBSD: from 4.1.1 through 4.3
References
Get alerted when CVE-2001-1155 or the next vulnerability affects your stack