Affects widely used Cisco Unified Communications products; exploitable XSS in management UIs can lead to admin session compromise and service disruption.
CVE-2026-76475
Stored XSS in Cisco Unified Communications web UIs allowing script execution and admin session compromise.
Is CVE-2026-76475 being exploited?
Not confirmed. CVE-2026-76475 does not appear in CISA's Known Exploited Vulnerabilities catalog, which records only exploitation that has been observed and reported publicly. That is evidence of absence of a report, not evidence the flaw is unattacked. EPSS currently estimates a 0.33% probability of exploitation in the next 30 days.
How severe is CVE-2026-76475?
CVE-2026-76475 is rated Critical with a CVSS score of 9.3. Severity describes how bad exploitation would be, not how likely it is: pair it with exploitation evidence before deciding what to patch first.
Is there a patch for CVE-2026-76475?
Yes. A fix has been recorded for CVE-2026-76475. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-76475 affect?
CVE-2026-76475 affects Cisco Emergency Responder, Cisco Prime Collaboration Deployment, Cisco Unified Communications Manager (Unified CM), Cisco Unified Communications Manager IM & Presence (Unified CM IM&P), and 2 further products or versions. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-76475?
Apply Cisco hardening updates immediately; restrict admin UI access and review logs.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Stored XSS in management web interfaces lets attackers run scripts in admin browsers, steal sessions, perform admin actions, and enable account takeover.
Immediate action required
- affected14
- affected14SU1
- affected14SU2
- affected14SU3
- affected14SU3a
- affected15
- affected15SU1
- affected15SU1a
- affected14SU4
- affected15SU2
- affected15SU3
- affected14SU5
- affected15SU4
- affected14SU6
- affected14
- affected14SU1
- affected14SU2
- affected14SU3
- affected15
- affected15SU1
- affected14SU4
- affected14SU4a
- affected15SU1a
- affected15SU2
- affected15.0.1.13010-1
- affected15.0.1.13011-1
- affected15.0.1.13012-1
- affected15.0.1.13013-1
- affected15.0.1.13014-1
- affected15.0.1.13015-1
- affected15.0.1.13016-1
- affected15.0.1.13017-1
- affected15SU3a
- affected14SU5
- affected15SU4
- affected15SU4a
- affected14SU6
- affected14
- affected14SU1
- affected14SU2
- affected14SU2a
- affected14SU3
- affected15
- affected15SU1
- affected14SU4
- affected15SU2
- affected15SU3
- affected14SU5
- affected15SU4
- affected14SU6
- affected14
- affected14SU1
- affected14SU2
- affected14SU3
- affected14SU3a
- affected15
- affected15SU1
- affected14SU4
- affected15SU2
- affected15SU3
- affected14SU5
- affected15SU4
- affected14SU6
As published in the CVE Program record. A version outside these ranges is not a statement that it is unaffected — vendors sometimes understate a range, and distribution-backported builds carry upstream numbers that do not reflect what was patched into them.