8.6
High
CVE-2019-1887 A vulnerability in the Session Initiation Protocol (SIP) protocol implementation of Cisco Unified Communications Manager…
Description
A vulnerability in the Session Initiation Protocol (SIP) protocol implementation of Cisco Unified Communications Manager could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition. The vulnerability is due to insufficient validation of input SIP traffic. An attacker could exploit this vulnerability by sending a malformed SIP packet to an affected Cisco Unified Communications Manager. A successful exploit could allow the attacker to trigger a new registration process on all connected phones, temporarily disrupting service.
Affected products and versions
| Product | Affected versions | Fixed in |
|---|---|---|
| Cisco Unified Communications Manager | Versions not published |
Other CVEs of Cisco Unified Communications Manager
The 62 CVEs of Cisco Unified Communications Manager →
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6.1
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7.5
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CVE-2026-76487
A vulnerability in Cisco Unified Communications Manager (Unified CM) and Cisco Unified Communications Manager Session…
5.3
Medium
CVE-2026-76479
As part of Cisco's ongoing commitment to proactive security and product quality, engineering teams for Cisco Emergency…
7.8
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