Vulnerability details
CVE-2026-76473
Cisco Emergency ResponderCisco Unified Communications ManagerCisco Unified Communications Manager IM and Presence ServiceCisco Unity Connection
Cisco Unified Communications Products Hardening Release: October 2026 - Improper control of a resource through its lifetime.
CVSS 3.1
9.8Critical
Official description
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 neutralization of special elements in output used by a downstream component that are grouped under the Common Weakness Enumeration (CWE) Class CWE-74.
CVSS scores
| Score | Version | Source | Vector |
|---|---|---|---|
| 9.8Critical | 3.1 | CVEProject cvelistV5 (CNA) (cisco) | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
Affected products
| Vendor | Product | Versions | Source |
|---|---|---|---|
| Cisco | Cisco Emergency Responder | 14 | CVEProject cvelistV5 (CNA) |
| Cisco | Cisco Emergency Responder | 14SU1 | CVEProject cvelistV5 (CNA) |
| Cisco | Cisco Emergency Responder | 14SU2 | CVEProject cvelistV5 (CNA) |
| Cisco | Cisco Emergency Responder | 14SU3 | CVEProject cvelistV5 (CNA) |
| Cisco | Cisco Emergency Responder | 14SU3a | CVEProject cvelistV5 (CNA) |
| Cisco | Cisco Emergency Responder | 14SU4 | CVEProject cvelistV5 (CNA) |
| Cisco | Cisco Emergency Responder | 14SU5 | CVEProject cvelistV5 (CNA) |
| Cisco | Cisco Emergency Responder | 14SU6 | CVEProject cvelistV5 (CNA) |
| Cisco | Cisco Emergency Responder | 15 | CVEProject cvelistV5 (CNA) |
| Cisco | Cisco Emergency Responder | 15SU1 | CVEProject cvelistV5 (CNA) |
| Cisco | Cisco Emergency Responder | 15SU1a | CVEProject cvelistV5 (CNA) |
| Cisco | Cisco Emergency Responder | 15SU2 | CVEProject cvelistV5 (CNA) |
| Cisco | Cisco Emergency Responder | 15SU3 | CVEProject cvelistV5 (CNA) |
| Cisco | Cisco Emergency Responder | 15SU4 | CVEProject cvelistV5 (CNA) |
| Cisco | Cisco Unified Communications Manager | 14 | CVEProject cvelistV5 (CNA) |
| Cisco | Cisco Unified Communications Manager | 14SU1 | CVEProject cvelistV5 (CNA) |
| Cisco | Cisco Unified Communications Manager | 14SU2 | CVEProject cvelistV5 (CNA) |
| Cisco | Cisco Unified Communications Manager | 14SU3 | CVEProject cvelistV5 (CNA) |
| Cisco | Cisco Unified Communications Manager | 14SU4 | CVEProject cvelistV5 (CNA) |
| Cisco | Cisco Unified Communications Manager | 14SU4a | CVEProject cvelistV5 (CNA) |
| Cisco | Cisco Unified Communications Manager | 14SU5 | CVEProject cvelistV5 (CNA) |
| Cisco | Cisco Unified Communications Manager | 14SU6 | CVEProject cvelistV5 (CNA) |
| Cisco | Cisco Unified Communications Manager | 15 | CVEProject cvelistV5 (CNA) |
| Cisco | Cisco Unified Communications Manager | 15.0.1.13010-1 | CVEProject cvelistV5 (CNA) |
| Cisco | Cisco Unified Communications Manager | 15.0.1.13011-1 | CVEProject cvelistV5 (CNA) |
| Cisco | Cisco Unified Communications Manager | 15.0.1.13012-1 | CVEProject cvelistV5 (CNA) |
| Cisco | Cisco Unified Communications Manager | 15.0.1.13013-1 | CVEProject cvelistV5 (CNA) |
| Cisco | Cisco Unified Communications Manager | 15.0.1.13014-1 | CVEProject cvelistV5 (CNA) |
| Cisco | Cisco Unified Communications Manager | 15.0.1.13015-1 | CVEProject cvelistV5 (CNA) |
| Cisco | Cisco Unified Communications Manager | 15.0.1.13016-1 | CVEProject cvelistV5 (CNA) |
| Cisco | Cisco Unified Communications Manager | 15.0.1.13017-1 | CVEProject cvelistV5 (CNA) |
| Cisco | Cisco Unified Communications Manager | 15SU1 | CVEProject cvelistV5 (CNA) |
| Cisco | Cisco Unified Communications Manager | 15SU1a | CVEProject cvelistV5 (CNA) |
| Cisco | Cisco Unified Communications Manager | 15SU2 | CVEProject cvelistV5 (CNA) |
| Cisco | Cisco Unified Communications Manager | 15SU3a | CVEProject cvelistV5 (CNA) |
| Cisco | Cisco Unified Communications Manager | 15SU4 | CVEProject cvelistV5 (CNA) |
| Cisco | Cisco Unified Communications Manager | 15SU4a | CVEProject cvelistV5 (CNA) |
| Cisco | Cisco Unified Communications Manager IM and Presence Service | 14 | CVEProject cvelistV5 (CNA) |
| Cisco | Cisco Unified Communications Manager IM and Presence Service | 14SU1 | CVEProject cvelistV5 (CNA) |
| Cisco | Cisco Unified Communications Manager IM and Presence Service | 14SU2 | CVEProject cvelistV5 (CNA) |
| Cisco | Cisco Unified Communications Manager IM and Presence Service | 14SU2a | CVEProject cvelistV5 (CNA) |
| Cisco | Cisco Unified Communications Manager IM and Presence Service | 14SU3 | CVEProject cvelistV5 (CNA) |
| Cisco | Cisco Unified Communications Manager IM and Presence Service | 14SU4 | CVEProject cvelistV5 (CNA) |
| Cisco | Cisco Unified Communications Manager IM and Presence Service | 14SU5 | CVEProject cvelistV5 (CNA) |
| Cisco | Cisco Unified Communications Manager IM and Presence Service | 14SU6 | CVEProject cvelistV5 (CNA) |
| Cisco | Cisco Unified Communications Manager IM and Presence Service | 15 | CVEProject cvelistV5 (CNA) |
| Cisco | Cisco Unified Communications Manager IM and Presence Service | 15SU1 | CVEProject cvelistV5 (CNA) |
| Cisco | Cisco Unified Communications Manager IM and Presence Service | 15SU2 | CVEProject cvelistV5 (CNA) |
| Cisco | Cisco Unified Communications Manager IM and Presence Service | 15SU3 | CVEProject cvelistV5 (CNA) |
| Cisco | Cisco Unified Communications Manager IM and Presence Service | 15SU4 | CVEProject cvelistV5 (CNA) |
| Cisco | Cisco Unity Connection | 14 | CVEProject cvelistV5 (CNA) |
| Cisco | Cisco Unity Connection | 14SU1 | CVEProject cvelistV5 (CNA) |
| Cisco | Cisco Unity Connection | 14SU2 | CVEProject cvelistV5 (CNA) |
| Cisco | Cisco Unity Connection | 14SU3 | CVEProject cvelistV5 (CNA) |
| Cisco | Cisco Unity Connection | 14SU3a | CVEProject cvelistV5 (CNA) |
| Cisco | Cisco Unity Connection | 14SU4 | CVEProject cvelistV5 (CNA) |
| Cisco | Cisco Unity Connection | 14SU5 | CVEProject cvelistV5 (CNA) |
| Cisco | Cisco Unity Connection | 14SU6 | CVEProject cvelistV5 (CNA) |
| Cisco | Cisco Unity Connection | 15 | CVEProject cvelistV5 (CNA) |
| Cisco | Cisco Unity Connection | 15SU1 | CVEProject cvelistV5 (CNA) |
| Cisco | Cisco Unity Connection | 15SU2 | CVEProject cvelistV5 (CNA) |
| Cisco | Cisco Unity Connection | 15SU3 | CVEProject cvelistV5 (CNA) |
| Cisco | Cisco Unity Connection | 15SU4 | CVEProject cvelistV5 (CNA) |
References and advisories
2
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Details
- Published
- 2026-10-21
- Last updated
- 2026-11-07
- State
- Published
- Assigner (CNA)
- cisco
Exploit prediction (EPSS)
0.5%
Probability of exploitation in 30 days
43.1%
Percentile (among all CVEs)
SSVC assessment (CISA)
- Automatable
- Yes
- Exploitation
- None
- Technical impact
- Total
Weaknesses (CWE)
- CWE-74Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')