CVE-2014-2125 in Unity Connection
Summary
by MITRE
Cross-site scripting (XSS) vulnerability in the Web Inbox in Cisco Unity Connection 8.6(2a)SU3 and earlier allows remote attackers to inject arbitrary web script or HTML via an unspecified parameter, aka Bug ID CSCui33028.
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Analysis
by VulDB Data Team • 05/09/2026
The vulnerability identified as CVE-2014-2125 represents a critical cross-site scripting flaw within Cisco Unity Connection's Web Inbox component, specifically affecting versions 8.6(2a)SU3 and earlier. This vulnerability resides in the web-based interface that administrators and users employ to manage voicemail and messaging functionalities within Cisco's unified communications environment. The flaw enables remote attackers to execute malicious scripts within the context of a victim's browser session, potentially compromising user data and system integrity. The vulnerability was catalogued under Bug ID CSCui33028, indicating its identification within Cisco's internal tracking systems and highlighting the severity of the issue.
The technical implementation of this XSS vulnerability occurs through an unspecified parameter within the Web Inbox interface that fails to properly sanitize user input before rendering it within web pages. This inadequate input validation creates an opportunity for attackers to inject malicious HTML or JavaScript code that executes in the victim's browser when the affected page is loaded. The vulnerability operates at the application layer, specifically targeting the web front-end components of Cisco Unity Connection, where user-supplied data is processed and displayed without adequate security controls. The flaw essentially allows attackers to manipulate the application's behavior by injecting code that can persist in the web interface and execute in the context of other users' sessions.
The operational impact of this vulnerability extends beyond simple data theft or session hijacking, as it provides attackers with the capability to perform a range of malicious activities within the compromised environment. Attackers could potentially steal user credentials, access sensitive voicemail messages, modify user configurations, or even escalate privileges within the unified communications system. The remote nature of the attack means that threat actors do not require physical access to the network or system to exploit the vulnerability, making it particularly dangerous for organizations with remote workers or distributed teams. This vulnerability directly violates security principles related to input validation and output encoding, creating a persistent threat vector that could be exploited repeatedly until patched.
Organizations affected by this vulnerability should prioritize immediate remediation through the application of Cisco's security patches and updates specifically designed to address the XSS flaw in Unity Connection. The mitigation strategy should include implementing proper input validation mechanisms, output encoding, and content security policies to prevent similar vulnerabilities from occurring in the future. Security teams should also conduct comprehensive vulnerability assessments to identify other potential XSS vectors within their Cisco Unity Connection deployments and related web applications. This vulnerability aligns with CWE-79, which categorizes cross-site scripting flaws as one of the most prevalent and dangerous web application security vulnerabilities, and it corresponds to ATT&CK technique T1059.007 for script execution within web applications. The remediation process should involve not only patching the specific vulnerability but also implementing broader security controls such as web application firewalls, regular security testing, and user education about the risks of clicking suspicious links or visiting untrusted websites that might exploit such vulnerabilities.