CVE-2009-4455
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…
Does this matter?
Lower severity and a low EPSS score (1.31%). Track it; it rarely justifies an emergency change on its own.
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."
- CVSS 2.0
- 6.5 MEDIUMAV:N/AC:L/Au:S/C:P/I:P/A:P
- EPSS
- 1.31% probability · 70th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-264
- Affected
- cisco/adaptive security appliance 5500
- Source
- cve@mitre.org
EPSS 1.3% since 26 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
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
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.