Cisco Emergency Responder injection

Summaryinfo

A vulnerability identified as very critical has been detected in Cisco Emergency Responder, Prime Collaboration Deployment, Unified Communications Manager, Unified Communications Manager IM and Presence Service and Unity Connection. This impacts an unknown function. The manipulation leads to injection. This vulnerability is referenced as CVE-2026-76473. Remote exploitation of the attack is possible. No exploit is available. You should 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 and Unity Connection and classified as very critical. This issue affects some unknown functionality. The manipulation with an unknown input leads to a injection vulnerability. Using CWE to declare the problem leads to CWE-74. The product constructs all or part of a command, data structure, or record using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify how it is parsed or interpreted when it is sent to a downstream component. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

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-2026-76473 are related to issues concerning improper control of a resource through its lifetime that are grouped under the Common Weakness Enumeration (CWE) Class CWE-74.  

It is possible to read the advisory at sec.cloudapps.cisco.com. The identification of this vulnerability is CVE-2026-76473 since 08/19/2026. The exploitation is known to be easy. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. The technical details are unknown and an exploit is not publicly available. The pricing for an exploit might be around USD $5k-$25k at the moment (estimation calculated on 10/21/2026). The attack technique deployed by this issue is T1055 according to MITRE ATT&CK.

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
• Unity Connection

License

• commercial

Website

• Vendor: https://www.cisco.com/

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