What is the severity of CVE-1999-1466?

CVE-1999-1466 is considered a critical vulnerability as it allows remote attackers to bypass access control lists on affected Cisco routers.

How do I fix CVE-1999-1466?

To fix CVE-1999-1466, you should upgrade your Cisco router IOS to a version that is not affected by this vulnerability, specifically above version 9.1.

What Cisco IOS versions are affected by CVE-1999-1466?

CVE-1999-1466 affects Cisco IOS versions 8.2 through 9.1.

What does the 'established' keyword imply in CVE-1999-1466?

In the context of CVE-1999-1466, the 'established' keyword in access control lists allows for specific types of traffic to be permitted, which can be exploited due to the vulnerability.

Who is at risk from CVE-1999-1466?

Organizations using Cisco routers with the affected IOS versions are at risk from CVE-1999-1466, particularly if they rely on access control lists for security.

Vulnerability/
CVE-1999-1466

high

7.5

CWE

NVD-CWE-Other

10/12/1992

12/9/2001

3/4/2025

CVE-1999-1466

First published: Thu Dec 10 1992(Updated: )

Vulnerability in Cisco routers versions 8.2 through 9.1 allows remote attackers to bypass access control lists when extended IP access lists are used on certain interfaces, the IP route cache is enabled, and the access list uses the "established" keyword.

Credit: cve@mitre.org cve@mitre.org

Affected Software	Affected Version	How to fix
Puppet Cisco IOS	=8.2
Puppet Cisco IOS	=8.3
Puppet Cisco IOS	=9.0
Puppet Cisco IOS	=9.1

Remedy

http://www.cert.org/advisories/CA-1992-20.html

Remedy

http://www.securityfocus.com/bid/53

Never miss a vulnerability like this again

Reference Links

Frequently Asked Questions

What is the severity of CVE-1999-1466?
CVE-1999-1466 is considered a critical vulnerability as it allows remote attackers to bypass access control lists on affected Cisco routers.
How do I fix CVE-1999-1466?
To fix CVE-1999-1466, you should upgrade your Cisco router IOS to a version that is not affected by this vulnerability, specifically above version 9.1.
What Cisco IOS versions are affected by CVE-1999-1466?
CVE-1999-1466 affects Cisco IOS versions 8.2 through 9.1.
What does the 'established' keyword imply in CVE-1999-1466?
In the context of CVE-1999-1466, the 'established' keyword in access control lists allows for specific types of traffic to be permitted, which can be exploited due to the vulnerability.
Who is at risk from CVE-1999-1466?
Organizations using Cisco routers with the affected IOS versions are at risk from CVE-1999-1466, particularly if they rely on access control lists for security.

agent/references
agent/type
agent/remedy
agent/first-publish-date
collector/mitre-cve
source/MITRE
agent/severity
agent/weakness
agent/description
agent/last-modified-date
agent/author
agent/event
agent/source
agent/softwarecombine
collector/nvd-historical
agent/software-canonical-lookup-request
collector/nvd-index
agent/tags
collector/nvd-api
source/NVD
vendor/cisco
canonical/cisco ios
version/cisco ios/9.1
version/cisco ios/8.2
version/cisco ios/9.0
version/cisco ios/8.3

Company

Resources

Contact

SecAlerts Pty Ltd.
132 Wickham Terrace
Fortitude Valley,
QLD 4006, Australia
info@secalerts.co

By using SecAlerts services, you agree to our services end-user license agreement. This website is safeguarded by reCAPTCHA and governed by the Google Privacy Policy and Terms of Service. All names, logos, and brands of products are owned by their respective owners, and any usage of these names, logos, and brands for identification purposes only does not imply endorsement. If you possess any content that requires removal, please get in touch with us.