CVE-1999-0453
Vulnerability record
Description
An attacker can identify a CISCO device by sending a SYN packet to port 1999, which is for the Cisco Discovery Protocol (CDP).
Key facts
- Published
- 4 Feb 2000
- Last changed
- 1 Aug 2024
- Assigned by
- mitre
- EPSS
- 1.415% likely to be exploited in the next 30 days, higher than 73.191% of CVEs (scores for 15 Nov 2026)
Historical context and remediation
This reference retains the original CVE publication date. A recent record update does not mean a new attack occurred.
No separately sourced impact summary is available on this page yet. Consult the description, version data and dated exploitation evidence.
No explicit remediation statement is available on this page yet. Consult the original record and vendor references before choosing a fix.
Version statuses below come from the CNA. An “unaffected” version is not necessarily a currently supported release or proof of a patch date. EPSS is a dated risk estimate, not a count of historical attacks.
Affected products
| Vendor | Product | Versions |
|---|---|---|
| n/a | n/a |
|
Timeline
- 4 Feb 2000 Published