Cisco patches 34 flaws, including critical Expressway RCE CVE-2026-76466
Fixes include Expressway X15.5.20 and Snort 3.12.4.0; Cisco says none are known to be exploited.
72
CVE-2026-76474
Improper authentication in multiple Cisco UC products
- CVSS 3.1
- 9.8 critical
- EPSS
- —
- Published
- ·
- Modified
AI analysisSummaries by Vani AI
Cisco grouped internally found improper-authentication flaws (CWE-287) under CVE-2026-76474 in Emergency Responder, Prime Collaboration Deployment, Unified CM, Unified CM IM&P, Unified CM SME, and Unity Connection. A remote attacker needs no credentials and no user interaction. Successful abuse can fully compromise confidentiality, integrity, and availability of the affected system.
What to do: Apply Cisco's software hardening updates for CVE-2026-76474 on each listed product. Cisco has not published specific fixed versions here.
| Product | Affected |
|---|---|
| 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) | — |
| Cisco Unity Connection | — |
Estimated exposure
No basis for an estimate.
Order-of-magnitude estimate by the model from install counts, market share and public scan data it knows; verify before quoting.
Description · NVD
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.
- Weakness
- CWE-287
- Vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H