Highest advisory severityMedium 1 vendor · 2 advisories

CVE-2026-76419

Cisco Unified Communications Manager Cross-Site Scripting Vulnerability

CVE-2026-76419: Cisco Unified Communications Manager Cross-Site Scripting Vulnerability. Not in the CISA KEV catalog.

Compare the source-linked records below. Ratings and product/version details belong to each advisory; they are not a single CVE-wide score or proof that every listed product is affected. How VulniPulse collects and checks evidence.

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CVE-2026-76419 key facts

CISA KEV: Not listed (catalog checked Nov 6, 2026)
Highest advisory severity: Medium
CVSS base score: 6.1 (Cisco)
Fixed releases: Cisco: 15SU5
Vendor advisories: 2 from Cisco
VulniPulse record: Published Oct 28, 2026 · Updated Nov 5, 2026

Scores, vectors, weaknesses and fixed releases are quoted from vendor advisories that cover only CVE-2026-76419; bulletin-wide values are not repeated here.

Is CVE-2026-76419 exploited?

No exploitation is reported in the sources VulniPulse tracks: CVE-2026-76419 is not in the CISA KEV catalog (checked Nov 6, 2026) and no tracked advisory for it reports exploitation. That is not proof the vulnerability cannot be exploited.

How do I fix CVE-2026-76419?

Upgrade to a fixed release named by the vendor:

Cisco: 15SU5

Upgrade to the first fixed release for your train per the Fixed Releases table in this advisory. (Cisco)
Release 14: migrate to a fixed release. (Cisco)

Vendor advisory comparison

Cisco

2 advisories

Advisory severityMedium6.1
Medium [CVE-2026-76419] Cisco Unified Communications Manager Cross-Site Scripting Vulnerability
cisco-sa-cucm-xss-5mQn2U5zSource published Nov 4, 2026Source updated Nov 4, 2026
A vulnerability in the web-based management interface of Cisco Unified Communications Manager (Unified CM) and Cisco Unified Communications Manager Session Management Edition (Unified CM SME) could allow an unauthenticated, remote attacker to conduct a cross-site scripting (XSS) attack against a user of the interface. This vulnerability exists because the web-based management interface does not properly validate user-supplied input. An attacker could exploit this vulnerability by persuading a user of the interface to click a crafted link. A successful exploit could allow the attacker to execute arbitrary script code in the context of the affected interface or access sensitive, browser-based information. Cisco has released software updates that address this vulnerability. There are no…
Affected products in this advisory
Unified Communications Manager
Source-reported affected versions
Scope: At the time of publication, this vulnerability affected Cisco Unified CM and Cisco Unified CM SME, regardless of device configuration.
14 — Migrate to a fixed release
Release 15 (first fixed: 15SU5)
Source-reported fixed versions
15SU5
Mitigation guidance
Upgrade to the first fixed release for your train per the Fixed Releases table in this advisory.
Release 14: migrate to a fixed release.
Release 15: upgrade to 15SU5.
Workarounds
There are no workarounds that address this vulnerability.
Full advisory and evidence Open source bulletin
Advisory severityUnrated
Advisory [CVE-2026-20241 +2] Cisco Advance Notification for Publication of November 4, 2026, Security Advisories
cisco-sa-notice-I8z3n6lKSource published Oct 28, 2026Source updated Oct 28, 2026
This bulletin covers 3 CVEs. The products, versions, score and guidance below describe the bulletin; check its source for applicability to this specific CVE.
On November 4, 2026, the Cisco Product Security Incident Response Team (PSIRT) published the following advisories: Cisco Security Advisory CVE ID Security Impact Rating CVSS Base Score Cisco UCS Central Software Remote Code Execution Vulnerability High 7.6 Cisco Unified Communications Manager Cross-Site Scripting Vulnerability Medium 6.1 Cisco Identity Services Engine Authorization Bypass Vulnerability 5.3 To remediate the vulnerabilities that were disclosed on November 4, 2026, Cisco strongly recommends that customers upgrade to the fixed software that is indicated in the advisories. Important: The Cisco PSIRT does not plan to publish any more security hardening advisories to disclose security vulnerability information for the remainder of calendar year 2026. The next planned…
Affected products in this advisory
No product details extracted. Check the source bulletin.
Source-reported affected versions
Affected-version details not available in this record.
Source-reported fixed versions
No fixed-version detail extracted. This does not mean no fix exists.
Mitigation guidance
On November 4, 2026, the Cisco Product Security Incident Response Team (PSIRT) will publish advisories to disclose security vulnerability information along with fixed software releases for the following Cisco products: Identity Services Engine (ISE) UCS Central Software Unified Communications Manager To remediate vulnerabilities to be disclosed on November 4, 2026, Cisco strongly recommends that customers upgrade to the fixed software indicated in the advisories.
Full advisory and evidence Open source bulletin

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