CVE-2026-76475: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in Cisco Cisco Emergency Responder

CVE-2026-76475 is a cross-site scripting vulnerability classified under CWE-79 affecting Cisco Emergency Responder. It arises from improper neutralization of input during web page generation, potentially allowing attackers to inject malicious scripts that could compromise confidentiality and integrity of the system. The vulnerability affects a range of specific versions of Cisco Emergency Responder, including major releases 14 and 15 with various service updates and patches enumerated. The CVSS 3.1 base score is 9.3, reflecting network attack vector, low attack complexity, no privileges required, user interaction required, and scope change with high confidentiality and integrity impacts but no availability impact. Cisco's internal security review led to software hardening releases that address this vulnerability among others.

Successful exploitation of this vulnerability could allow an attacker to execute malicious scripts in the context of the affected web application, potentially leading to unauthorized disclosure or modification of sensitive information. The CVSS score of 9.3 indicates critical severity with high impact on confidentiality and integrity. However, exploitation requires user interaction and no known exploits are currently reported in the wild.

Cisco has conducted internal security reviews and released software hardening updates addressing this vulnerability. Users should apply the official Cisco software hardening releases for Cisco Emergency Responder versions listed as affected. Patch status is not explicitly confirmed in the provided data; therefore, verify with Cisco's official advisories for the latest remediation guidance and apply updates accordingly.