CVE-2009-4455

Name: CVE-2009-4455
Creator: NVD / NIST
Published: 2009-12-29T23:30:00.39+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 1.31%

Last modified Jun 16, 2026

CVE-2009-4455 is a vulnerability of currently unknown severity. The default configuration of Cisco ASA 5500 Series Adaptive Security Appliance (Cisco ASA) 7.0, 7.1, 7.2, 8.0, 8.1, and 8.2 allows portal traffic to access arbitrary backend servers, which might allow remote authenticated users to bypass intended access restrictions and access unauthorized web sites via a crafted URL obfuscated with ROT13 and a certain encoding. NOTE: this issue was originally reported as a vulnerability related to lack of restrictions to URLs listed in the Cisco WebVPN bookmark component, but the vendor states that "The bookmark feature is not a security feature.". EPSS estimates a 1.31% chance of exploitation in the next 30 days.

Description

The default configuration of Cisco ASA 5500 Series Adaptive Security Appliance (Cisco ASA) 7.0, 7.1, 7.2, 8.0, 8.1, and 8.2 allows portal traffic to access arbitrary backend servers, which might allow remote authenticated users to bypass intended access restrictions and access unauthorized web sites via a crafted URL obfuscated with ROT13 and a certain encoding. NOTE: this issue was originally reported as a vulnerability related to lack of restrictions to URLs listed in the Cisco WebVPN bookmark component, but the vendor states that "The bookmark feature is not a security feature."

Metrics

EPSS Probability

1.31%

67.0th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-264

Affected Software

Vendor	Product	Versions
Cisco	Adaptive Security Appliance 5500	7.0
Cisco	Adaptive Security Appliance 5500	7.1
Cisco	Adaptive Security Appliance 5500	7.2
Cisco	Adaptive Security Appliance 5500	8.0
Cisco	Adaptive Security Appliance 5500	8.1
Cisco	Adaptive Security Appliance 5500	8.2

References

http://osvdb.org/61132
http://secunia.com/advisories/37710Vendor Advisory
http://tools.cisco.com/security/center/viewAlert.x?alertId=19609Vendor Advisory
http://www.securityfocus.com/archive/1/508530/100/0/threaded
http://www.securitytracker.com/id?1023368
http://www.vupen.com/english/advisories/2009/3577Vendor Advisory
http://osvdb.org/61132
http://secunia.com/advisories/37710Vendor Advisory
http://tools.cisco.com/security/center/viewAlert.x?alertId=19609Vendor Advisory
http://www.securityfocus.com/archive/1/508530/100/0/threaded
http://www.securitytracker.com/id?1023368
http://www.vupen.com/english/advisories/2009/3577Vendor Advisory

Timeline

Published: Dec 29, 2009
Last Modified: Jun 16, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2009-4455?

How severe is CVE-2009-4455?

Severity scoring for CVE-2009-4455 is pending analysis. The EPSS model estimates a 1.31% probability of exploitation in the next 30 days.

How do I fix CVE-2009-4455?

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-2009-4455?

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

Scan your code now

Source: NVD / NIST