Home/CVE/Denial of service in Cisco routers running NAT via a PORT command from an FTP client to a Telnet port.
CVE

CVE-1999-0843

Denial of service in Cisco routers running NAT via a PORT command from an FTP client to a Telnet port.

Denial of service in Cisco routers running NAT via a PORT command from an FTP client to a Telnet port.

MEDIUM · CVSS 5 EPSS 0.00504
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  • No active-exploitation, high-EPSS, or public-exploit signals - routine patching cadence
Sigma rules1 YARA rules0
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Affected Products & Versions

1
cisco routerall versions
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Sigma Hunt Rules

1
Exact rules name this CVE ID. Product rules name an affected product in their title. Related rules cover techniques used by actors who exploited this CVE. Showing the most relevant matches; the complete related set is on the full drill-down.
productmediumISATAP Router Address Was Set
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Scoring & Timeline

5
MEDIUM · CVSS v2 (legacy) · cve@mitre.org
View on NVD
This CVE predates CVSS v3; the legacy v2 score is shown so triage still has a severity to work with.
v2 Vector
AV:N/AC:L/Au:N/C:N/I:N/A:P
Published to NVD04 Nov 1999 · 05:00 AM
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References & Sources

1
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://exchange.xforce.ibmcloud.com/vulnerabilities/CVE-1999-0843
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