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Unrated severityNVD Advisory· Published Dec 31, 2003· Updated Jun 16, 2026

CVE-2003-1491

CVE-2003-1491

Description

Kerio Personal Firewall (KPF) 2.1.4 has a default rule to accept incoming packets from DNS (UDP port 53), which allows remote attackers to bypass the firewall filters via packets with a source port of 53.

Affected products

2
  • Kerio Technologies/Personal Firewall2 versions
    cpe:2.3:a:kerio:personal_firewall:2.1.4:*:*:*:*:*:*:*+ 1 more
    • cpe:2.3:a:kerio:personal_firewall:2.1.4:*:*:*:*:*:*:*
    • (no CPE)range: =2.1.4

Patches

Vulnerability mechanics

References

4

News mentions

0

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