Is there a public exploit for CVE-2026-76474?

Yes. Proof-of-concept code for CVE-2026-76474 has been published publicly.

How severe is CVE-2026-76474?

CVE-2026-76474 scores CVSS 9.8 (v3.1), rated critical. EPSS puts the chance of exploitation in the next 30 days at 0.47%.

What does CVE-2026-76474 affect?

CVE-2026-76474 affects Cisco Cisco Unified Communications Manager, Cisco Unity Connection, Cisco Emergency Responder, Cisco Unified Communications Manager IM and Presence Service.

9.8 Critical

As part of Cisco's ongoing commitment to proactive security and product quality, engineering teams for Cisco Emergency Responder, Cisco…

CVE-2026-76474

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-2026-76474 are related to issues concerning improper authentication that are grouped under the Common Weakness Enumeration (CWE) Class CWE-287.

Proof-of-concept code is published

Public PoC

Public PoCListed proof-of-concept repositories

Signals come from Exploit-DB, Metasploit, Nuclei and published proof-of-concept repositories. Their absence means nothing was found, not that nothing exists.

Assessment

CVSS: 9.8 (v3.1)
Severity: Critical
EPSS: 0.47% chance of exploitation in the next 30 days
Known exploited: Not listed in CISA KEV
Exploit availability: Public PoC
Published: 21 October 2026
Last updated: 7 November 2026
Affected: Cisco · Cisco Emergency Responder · Cisco Unified Communications Manager · Cisco Unified Communications Manager IM and Presence Service · Cisco Unity Connection
Assigner: cisco

CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

At the source

EUVD (ENISA)

References

https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-voice-hardening-twgbH9e3

Community proofs of concept

No community proof of concept yet. If you have one for a published vulnerability and the right to share it, add it below — it will appear here once reviewed.

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Query this programmatically

Agents can read this through the MCP endpoint, or over HTTP:

curl https://cve.zerocrew.in/api/cve/CVE-2026-76474