Cisco Emergency Responder path traversal

Summaryinfo

A vulnerability was found in Cisco Emergency Responder, Prime Collaboration Deployment, Unified Communications Manager, Unified Communications Manager IM and Presence Service, Unified Communications Manager Session Management Edition and Unity Connection and classified as very critical. The impacted element is an unknown function. Such manipulation leads to path traversal. This vulnerability is traded as CVE-2026-76479. The attack may be launched remotely. There is no exploit available. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability was found in Cisco Emergency Responder, Prime Collaboration Deployment, Unified Communications Manager, Unified Communications Manager IM and Presence Service, Unified Communications Manager Session Management Edition and Unity Connection and classified as very critical. Affected by this issue is an unknown code. The manipulation with an unknown input leads to a path traversal vulnerability. Using CWE to declare the problem leads to CWE-22. The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory. Impacted is confidentiality, integrity, and availability. CVE summarizes:

As part of Cisco's ongoing commitment to proactive security and product quality, engineering teams for Cisco Emergency Responder, Cisco Prime Collaboration Deployment, Cisco Unified Communications Manager (Unified CM), Cisco Unified Communications Manager IM & Presence Service (Unified CM IM&P), Cisco Unified Communications Manager Session Management Edition (Unified CM SME), and Cisco Unity Connection have conducted a comprehensive internal security review. This review resulted in software hardening releases that address multiple internally discovered vulnerabilities. The vulnerabilities tracked by CVE-2026-76479 are related to issues concerning improper limitation of a pathname to a restricted directory that are grouped under the Common Weakness Enumeration (CWE) Base CWE-22.

The advisory is shared for download at sec.cloudapps.cisco.com. This vulnerability is handled as CVE-2026-76479 since 08/19/2026. The exploitation is known to be easy. The attack may be launched remotely. There are neither technical details nor an exploit publicly available. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 10/21/2026). The MITRE ATT&CK project declares the attack technique as T1006.

Upgrading eliminates this vulnerability.

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Productinfo

Type

• Unified Communication Software

Vendor

• Cisco

Name

• Emergency Responder
• Prime Collaboration Deployment
• Unified Communications Manager
• Unified Communications Manager IM and Presence Service
• Unified Communications Manager Session Management Edition
• Unity Connection

License

• commercial

Website

• Vendor: https://www.cisco.com/

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