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CWE-863

3,041 CVEs • Abstraction: Class • Likelihood of Exploit: High

Incorrect Authorization

The product performs an authorization check when an actor attempts to access a resource or perform an action, but it does not correctly perform the check. This allows attackers to bypass intended access restrictions.

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CVEs (3,041)

CVE
VENDORS
PRODUCTS
UPDATED
PUBLISHED
CVSS
CVE-2001-1155
1Freebsd
1Freebsd
Apr 16, 2026
Aug 23, 2001
N/A· v4
9.8 CRITICAL· v3
7.5 HIGH· v2
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 restr...Show more
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.Show less