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CVE-2026-20061: Medium Vulnerability in Cisco Unity Connection

A medium-severity SQL injection vulnerability in Cisco Unity Connection could allow authenticated attackers to view data on affected devices. Immediate patching is recommended to mitigate risks.

MEDIUMCVSS 4.3 · Published April 15, 2026

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A vulnerability in the web-based management interface of Cisco Unity Connection could allow an authenticated, remote attacker to perform an SQL injection attack against an affected device. To exploit this vulnerability, the attacker must have valid user credentials on the affected device.

This vulnerability is due to insufficient validation of user-supplied input. An attacker could exploit this vulnerability by sending a crafted HTTP(S) request to the web-based management interface of an affected device. A successful exploit could allow the attacker to view data on the affected device.

The CVSS score for this vulnerability is 4.3, classified as medium severity. Organizations should prioritize patching immediately to mitigate potential risks.

Vulnerability Details

The vulnerability allows SQL injection through the management interface. The attack vector is network-based, requiring low complexity and low privileges for exploitation.

Technical Analysis

The root cause of this vulnerability is insufficient input validation, allowing crafted requests to interact with the database.

Risk & Impact Analysis

Risk to organizations includes unauthorized data access. The urgency for remediation is medium, and organizations should schedule remediation.

Exploitation Status

Signal

Status

Known Exploit

No

Public PoC

No

Actively Exploited

No

Ransomware Use

No

Affected Versions

All versions prior to vendor patch are affected, including versions up to 15.3 of Cisco Unity Connection.

Mitigation & Remediation

Organizations should prioritize patching immediately. For remediation, Cisco has released updates for affected versions which should be applied as soon as possible. If no patch is available, consider implementing network controls to limit access to the management interface.

Detection Guidance

Monitor logs for unusual HTTP(S) requests to the web-based management interface. Look for patterns of requests that do not conform to normal operational behavior.

AppSecure Threat Intelligence Insight

This vulnerability highlights the need for proper input validation in web applications. Security teams should conduct regular assessments and consider using penetration testing to identify similar weaknesses.

Furthermore, organizations should establish a vulnerability management program to address such vulnerabilities effectively.

Lastly, engaging in continuous security testing can enhance defenses against emerging threats.

Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.

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