Unrated severityNVD Advisory· Published Jan 1, 1999· Updated Apr 16, 2026
CVE-1999-0453
CVE-1999-0453
Description
An attacker can identify a CISCO device by sending a SYN packet to port 1999, which is for the Cisco Discovery Protocol (CDP).
Affected products
1- cpe:2.3:h:cisco:router:*:*:*:*:*:*:*:*
Patches
0No patches discovered yet.
Vulnerability mechanics
AI mechanics synthesis has not run for this CVE yet.
References
1News mentions
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