CVE detail

CVE-1999-0453 — CVE-1999-0453

Published 1999-01-01 · Modified 2026-06-16 · Vendor cisco · Product router · Source nvd

UNKNOWN

severity

CVSS-derived band

n/a

CVSS v3

0–10 scale

0.0141

EPSS probability

exploitation probability, 30d

70.0%

EPSS percentile

percentile vs all CVEs

NOT LISTED

CISA KEV

known exploited catalog

Description

An attacker can identify a CISCO device by sending a SYN packet to port 1999, which is for the Cisco Discovery Protocol (CDP).

Remediation

Product	Vulnerable range	Fixed version	Advisory
n/a n/a	—	not specified	advisory ↗

References

NVD entry ↗
CVE.org record ↗
https://exchange.xforce.ibmcloud.com/vulnerabilities/CVE-1999-0453

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