The ASA flaw CVE-2014-2120 is being actively exploited in the wild

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Cisco warns customers that a decade-old ASA vulnerability, tracked as CVE-2014-2120, is being actively exploited in the wild.

Cisco warns that the decade-old ASA vulnerability CVE-2014-2120 is being actively exploited in attacks in the wild, and urges customers to review the updated advisory.

The vulnerability resides in the WebVPN login page of Cisco Adaptive Security Appliance (ASA) Software, an unauthenticated, remote attacker could exploit the flaw to conduct a cross-site scripting (XSS) attack against a user of WebVPN on the Cisco ASA.

“A vulnerability in the WebVPN login page of Cisco Adaptive Security Appliance (ASA) Software could allow an unauthenticated, remote attacker to conduct a cross-site scripting (XSS) attack against a user of WebVPN on the Cisco ASA.” reads the advisory. “The vulnerability is due to insufficient input validation of a parameter. An attacker could exploit this vulnerability by convincing a user to access a malicious link.”

The networking giant first published the advisory on March 18, 2024, however in November 2024, Cisco PSIRT detected new exploitation attempts for the vulnerability.

“In November 2024, the Cisco Product Security Incident Response Team (PSIRT) became aware of additional attempted exploitation of this vulnerability in the wild.” continues the advisory. “Cisco continues to strongly recommend that customers upgrade to a fixed software release to remediate this vulnerability.”

In November, the US CISA added the vulnerability CVE-2014-2120 to its Known Exploited Vulnerabilities (KEV) catalog.

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