CVE-1999-1464

Name: CVE-1999-1464
Creator: NVD / NIST
Published: 1999-12-31T05:00:00+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 1.64%

Last modified Jun 16, 2026

CVE-1999-1464 is a vulnerability of currently unknown severity. Vulnerability in Cisco IOS 11.1CC and 11.1CT with distributed fast switching (DFS) enabled allows remote attackers to bypass certain access control lists when the router switches traffic from a DFS-enabled interface to an interface that does not have DFS enabled, as described by Cisco bug CSCdk35564.. EPSS estimates a 1.64% chance of exploitation in the next 30 days.

Description

Vulnerability in Cisco IOS 11.1CC and 11.1CT with distributed fast switching (DFS) enabled allows remote attackers to bypass certain access control lists when the router switches traffic from a DFS-enabled interface to an interface that does not have DFS enabled, as described by Cisco bug CSCdk35564.

Metrics

EPSS Probability

1.64%

73.4th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

Vendor	Product	Versions
Cisco	Ios	11.1cc
Cisco	Ios	11.1ct

References

http://ciac.llnl.gov/ciac/bulletins/j-016.shtmlPatch, Vendor Advisory
http://www.cisco.com/warp/public/770/iosdfsacl-pub.shtmlPatch, Vendor Advisory
https://exchange.xforce.ibmcloud.com/vulnerabilities/1401
http://ciac.llnl.gov/ciac/bulletins/j-016.shtmlPatch, Vendor Advisory
http://www.cisco.com/warp/public/770/iosdfsacl-pub.shtmlPatch, Vendor Advisory
https://exchange.xforce.ibmcloud.com/vulnerabilities/1401

Timeline

Published: Dec 31, 1999
Last Modified: Jun 16, 2026
Status: Modified

Frequently Asked Questions

What is CVE-1999-1464?

How severe is CVE-1999-1464?

Severity scoring for CVE-1999-1464 is pending analysis. The EPSS model estimates a 1.64% probability of exploitation in the next 30 days.

How do I fix CVE-1999-1464?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-1999-1464?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST