Critical-Severity Cross-Site Scripting Flaw in Cisco Emergency Responder Tracked as CVE-2026-76475
A newly published critical vulnerability in Cisco Emergency Responder carries a CVSS score of 9.3. Here is what is affected and how to respond.
Key points
- CVE-2026-76475 affects Cisco Emergency Responder.
- CVSS 9.3 (Critical).
- No exploitation confirmed yet.
Cisco Emergency Responder is affected by CVE-2026-76475, a cross-site scripting that the National Vulnerability Database rates 9.3 out of 10.
At a glance
- CVE
- CVE-2026-76475
- Product
- Cisco Emergency Responder
- CVSS
- 9.3 Critical
- Weakness
- cross-site scripting
- Exploited
- No known exploitation
What is the vulnerability?
The NVD entry states: 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-2026-76475 are related to issues concerning improper neutralization of input during web page generation that are grouped under the Common Weakness Enumeration (CWE) Base CWE-79.
Affected versions
| Vendor | Product | Versions |
|---|---|---|
| Cisco | Cisco Emergency Responder | 14, 14SU1, 14SU2, 14SU3 |
| Cisco | Cisco Unified Communications Manager | 14, 14SU1, 14SU2, 14SU3 |
| Cisco | Cisco Unified Communications Manager IM and Presence Service | 14, 14SU1, 14SU2, 14SU2a |
| Cisco | Cisco Unity Connection | 14, 14SU1, 14SU2, 14SU3 |
CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N.
Is it being exploited?
There is no public confirmation of exploitation at the time of publication. It does not appear in CISA's Known Exploited Vulnerabilities catalog. We will update this report if that changes.
What should you do?
- Identify whether the affected product and versions run in your environment.
- Apply the vendor update listed in the advisory as soon as it is available.
- Limit network exposure of the affected service until it is patched.
- Monitor the vendor advisory for updated guidance or exploitation reports.
What to do and how to stay safe: CVE-2026-76475
- Vulnerability severity scores ignore your specific architecture and context.
- Exploitability depends on network exposure and user behavior, not just code flaws.
- Prioritization requires continuous asset inventory and threat intelligence alignment.
Risk-based vulnerability management focuses your limited resources on the flaws that actually threaten your business. Start by mapping your critical assets and checking for active exploits to prioritize your backlog.
Step-by-step guide: Risk-Based Vulnerability Management: Prioritize Fixes by Actual Danger
General security guidance from the Threat Times newsroom. It is not confirmed advice from the organisations named in this story.
Frequently asked questions
What is CVE-2026-76475?
CVE-2026-76475 is a cross-site scripting vulnerability in Cisco Emergency Responder.
How severe is CVE-2026-76475?
It has a CVSS score of 9.3 Critical.
Is CVE-2026-76475 being exploited?
There is no public confirmation of exploitation at the time of publication.
