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Vulnerability record · CVE-2009-1155 · published 9 April 2009

CVE-2009-1155: Cisco adaptive security appliance 5500 improper authentication vulnerability

Cisco · Adaptive Security Appliance 5500

Cisco Adaptive Security Appliances (ASA) 5500 Series and PIX Security Appliances 7.1(1) through 7.1(2)82, 7.2 before 7.2(4)27, 8.0 before 8.0(4)25, and 8.1 before 8.1(2)15, when AAA override-account-disable is entered in a general-attributes field, allow remote attackers to bypass authentication and establish a VPN session to an ASA device via unspecified vectors.

7.8 CVSS 2.0 High EPSS 1.9% · top 21.4% CWE-287 · Improper authentication
7.8CVSS 2.0 base score
1.9%EPSS exploitation probability, 30 days
NoNot in CISA KEV
2Affected product versions listed by NVD
12References
16 Jun 2026Last modified by NVD

Description

Cisco Adaptive Security Appliances (ASA) 5500 Series and PIX Security Appliances 7.1(1) through 7.1(2)82, 7.2 before 7.2(4)27, 8.0 before 8.0(4)25, and 8.1 before 8.1(2)15, when AAA override-account-disable is entered in a general-attributes field, allow remote attackers to bypass authentication and establish a VPN session to an ASA device via unspecified vectors.

AV:N/AC:L/Au:N/C:C/I:N/A:N

Affected products

2 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://osvdb.org/53441
http://secunia.com/advisories/34607
http://www.cisco.com/en/US/products/products_security_advisory09186a0080a994f6.shtml PatchVendor Advisory
http://www.securityfocus.com/bid/34429
http://www.securitytracker.com/id?1022016
http://www.vupen.com/english/advisories/2009/0981
http://osvdb.org/53441
http://secunia.com/advisories/34607
http://www.cisco.com/en/US/products/products_security_advisory09186a0080a994f6.shtml PatchVendor Advisory
http://www.securityfocus.com/bid/34429
http://www.securitytracker.com/id?1022016
http://www.vupen.com/english/advisories/2009/0981

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

10.0CVE-2007-2462Cisco pix vulnerabilityUnspecified vulnerability in Cisco Adaptive Security Appliance (ASA) and PIX 7.2 before 7.2(2)8, when using Layer 2 Tunneling Protocol (L2TP) or Remo…EPSS 6.5%7.8CVE-2009-1157Cisco adaptive security appliance 5500 vulnerabilityMemory leak on Cisco Adaptive Security Appliances (ASA) 5500 Series and PIX Security Appliances 7.0 before 7.0(8)6, 7.1 before 7.1(2)82, 7.2 before 7…EPSS 2.7%7.8CVE-2009-1158Cisco adaptive security appliance 5500 vulnerabilityUnspecified vulnerability on Cisco Adaptive Security Appliances (ASA) 5500 Series devices 7.0 before 7.0(8)6, 7.1 before 7.1(2)82, 7.2 before 7.2(4)2…EPSS 1.9%7.8CVE-2009-1159Cisco adaptive security appliance 5500 vulnerabilityUnspecified vulnerability on Cisco Adaptive Security Appliances (ASA) 5500 Series and PIX Security Appliances 7.2 before 7.2(4)26, 8.0 before 8.0(4)2…EPSS 1.9%7.8CVE-2008-2732Cisco adaptive security appliance 5500 vulnerabilityMultiple unspecified vulnerabilities in the SIP inspection functionality in Cisco PIX and Adaptive Security Appliance (ASA) 5500 devices 7.0 before 7…EPSS 3.4%7.8CVE-2007-2461Cisco pix vulnerabilityThe DHCP relay agent in Cisco Adaptive Security Appliance (ASA) and PIX 7.2 allows remote attackers to cause a denial of service (dropped packets) vi…EPSS 4.4%7.8CVE-2007-2463Cisco pix vulnerabilityUnspecified vulnerability in Cisco Adaptive Security Appliance (ASA) and PIX 7.1 before 7.1(2)49 and 7.2 before 7.2(2)17 allows remote attackers to c…EPSS 2.9%7.1CVE-2008-2733Cisco adaptive security appliance 5500 vulnerabilityCisco PIX and Adaptive Security Appliance (ASA) 5500 devices 7.2 before 7.2(4)2, 8.0 before 8.0(3)14, and 8.1 before 8.1(1)4, when configured as a cl…EPSS 3.2%

Source: NIST National Vulnerability Database (record CVE-2009-1155), CISA KEV, FIRST EPSS (scores of 2026-09-28). This page is refreshed as NVD updates the record.