CVE-2021-1409

Cisco Unified Communications Products Cross-Site Scripting Vulnerabilities

MEDIUM
6.1
CVSS Score
Published: April 8, 2021 at 04:06 AM UTC
Updated: June 17, 2026 at 03:31 AM UTC
3 products affected across 1 vendorUnified Communications ManagerUnity ConnectionUnified Communications Manager Im & Presence Service

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Severity
MEDIUM6.1
Exploit prediction
EPSS 0.9%
SSVC
No known exploit

Description

Multiple vulnerabilities in the web-based management interface of 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 could allow an unauthenticated, remote attacker to conduct a cross-site scripting (XSS) attack against an interface user. These vulnerabilities exist because the web-based management interface does not properly validate user-supplied input. An attacker could exploit these vulnerabilities by persuading an interface user 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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v < 14
Affected range stops below 14, so it looks safe — our inference, not a vendor statement
v < 14
Affected range stops below 14, so it looks safe — our inference, not a vendor statement
v < 14.0
Affected range stops below 14.0, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

6.1MEDIUMcisco
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality
LOW
Integrity
LOW
Availability
NONE
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-89CWE-79

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