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Vulnerability record · CVE-2011-2054 · published 19 February 2020

CVE-2011-2054: Cisco asa 5500 firmware improper authentication vulnerability

Cisco · Asa 5500 Firmware

A vulnerability in the Cisco ASA that could allow a remote attacker to successfully authenticate using the Cisco AnyConnect VPN client if the Secondary Authentication type is LDAP and the password is left blank, providing the primary credentials are correct. The vulnerabilities is due to improper input validation of certain parameters passed to the affected software. An attacker must have the correct primary credentials in order to successfully exploit this vulnerability.

7.5 CVSS 3.1 High EPSS 0.86% · top 43.2% CWE-287 · Improper authentication
7.5CVSS 3.1 base score, v2 6.0
0.86%EPSS exploitation probability, 30 days
NoNot in CISA KEV
12Affected product versions listed by NVD
2References
16 Jun 2026Last modified by NVD

Description

A vulnerability in the Cisco ASA that could allow a remote attacker to successfully authenticate using the Cisco AnyConnect VPN client if the Secondary Authentication type is LDAP and the password is left blank, providing the primary credentials are correct. The vulnerabilities is due to improper input validation of certain parameters passed to the affected software. An attacker must have the correct primary credentials in order to successfully exploit this vulnerability.

CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected products

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

References

LinkTags
https://quickview.cloudapps.cisco.com/quickview/bug/CSCtq58884 Vendor Advisory
https://quickview.cloudapps.cisco.com/quickview/bug/CSCtq58884 Vendor Advisory

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

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Source: NIST National Vulnerability Database (record CVE-2011-2054), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.