Cisco Unity Connection Reflected Cross-Site Scripting Vulnerability

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Summary

CVECVE-2026-20059
StatePUBLISHED
Assignercisco
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-04-15 17:17:01 UTC
Updated2026-04-15 17:17:01 UTC
DescriptionA vulnerability in the web-based management interface of Cisco Unity Connection could allow an unauthenticated, remote attacker to conduct a reflected 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 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.

Risk And Classification

Primary CVSS: v3.1 6.1 MEDIUM from [email protected]

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Problem Types: CWE-79 | CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

VersionSourceTypeScoreSeverityVector
3.1[email protected]Primary6.1MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
3.1CNACVSSV3_16.1MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Changed
Confidentiality
Low
Integrity
Low
Availability
None

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Cisco Cisco Unity Connection affected 14 Not specified
CNA Cisco Cisco Unity Connection affected 14SU1 Not specified
CNA Cisco Cisco Unity Connection affected 14SU2 Not specified
CNA Cisco Cisco Unity Connection affected 14SU3 Not specified
CNA Cisco Cisco Unity Connection affected 14SU3a Not specified
CNA Cisco Cisco Unity Connection affected 15 Not specified
CNA Cisco Cisco Unity Connection affected 15SU1 Not specified
CNA Cisco Cisco Unity Connection affected 14SU4 Not specified
CNA Cisco Cisco Unity Connection affected 15SU2 Not specified
CNA Cisco Cisco Unity Connection affected 15SU3 Not specified
CNA Cisco Cisco Unity Connection affected 14SU5 Not specified
CNA Cisco Cisco Unity Connection affected 15SU4 Not specified

References

ReferenceSourceLinkTags
sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-unity-... [email protected] sec.cloudapps.cisco.com
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Additional Advisory Data

Exploits

CNA: The Cisco PSIRT is not aware of any public announcements or malicious use of the vulnerability that is described in this advisory.

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