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CVE-2026-76478VulnerabilityPublished Updated

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

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Authoritative record:CVE-2026-76478· High 8.8

Not known to be exploited · CVSS 8.8 High.

Data as of 7 Nov 2026, 19:47 UTC

CVSS 3.1 base score
8.8High
How severe the flaw is on the 0–10 CVSS scale.

Thin evidence

One scorer or none
CVSS scores by source
CNA (cisco)CVSS 3.18.8
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 21 Oct 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 7 Nov 2026.

What to do

Affected software

ProductAffectedFixed in
CiscoCisco Emergency ResponderAffected
  • 14 – 15SU4
14 affected builds
Fixed in–
CiscoCisco Unified Communications ManagerAffected
  • 14 – 15SU4a
23 affected builds
Fixed in–
CiscoCisco Unified Communications Manager IM and Presence ServiceAffected
  • 14 – 15SU4
13 affected builds
Fixed in–
CiscoCisco Unity ConnectionAffected
  • 14 – 15SU4
13 affected builds
Fixed in–

AI-suggested

Cisco has released software hardening updates to address these vulnerabilities. Users of the affected Cisco products should apply the provided updates promptly to mitigate the risk. Since this is not a cloud service, remediation depends on deploying the updated software versions. Patch status is not explicitly confirmed in the provided data; users should consult Cisco advisories for the latest remediation guidance.

Description

CVE-2026-76478 is a high-severity vulnerability involving improper access control (CWE-284) discovered internally by Cisco in multiple collaboration and communication products. The issue affects Cisco Emergency Responder, Cisco Prime Collaboration Deployment, Cisco Unified Communications Manager and related services. Cisco has conducted a security review and released software hardening updates to address these vulnerabilities.

References

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