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CVE-2026-20059 Cisco Unity Connection

Affected softwareCisco Unity Connection
Severity6.1 Medium CVSS 3.1
WeaknessCross-site scripting (CWE-79)
Published15 Apr 2026
Updated26 Oct 2026

Description

A 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.

Exploitation status

No public exploit

No exploit has been reported in the sources we check.

  • CISA KEV not listed
  • VulnCheck KEV not listed
  • CISA Vulnrichment exploitation: none
  • Indexed PoC none indexed
  • EPSS 0.20% chance in 30 days

Waratek protection

Outside Waratek scope

A Java vulnerability, but not one Waratek protects. It affects only Java on a user's desktop (applets, Web Start, JavaFX, the installer), sits in a product the Waratek agent can't be installed into, or is in a package we don't expect in business applications. The decision below says which.

  • Protection none
  • Action not pursued none
  • Review automated Upstream data
  • Record active
Decided by The only affected product being a sealed appliance image, where Java runs but no -javaagent can be attached
Finding This CVE names only products the Waratek agent cannot be installed into (cisco/unity_connection). They ship as sealed appliance images or as native code with no application JVM, so there is no start-up line to add -javaagent to. The vulnerability may well be a Java one; it is permanently out of ARMR's reach rather than outside its subject.

Affected software and releases

Products and versions

1 product, 12 version entries
SourceVendorProductSchemeAffected versions
nvd cisco unity connection generic ≤ 12.5 · 14.0 · 14su1 · 14su2 · 14su3 · 14su3a · 14su4 · 14su5 · 15.0 · 15su1 · 15su2 · 15su3

References

URLTags
https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-unity-vulns-n2EJSbbw Vendor Advisory

Timeline

Published2026-04-15By the CVE Program.
NVD record modified2026-10-26NVD's own last-modified date for this record.