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CVE record · CVE-2026-20230

Cisco Unified Communications Manager Server-Side Request Forgery Vulnerability

CVSS 8.6 HighCriticalIn CISA KEVEPSS 0.89 · 99th percentile

Critical, because:

  • In CISA’s KEV catalogue since 25 Jun 2026: it is known to be exploited.
  • CVSS score 8.6 (7.0 or more) and EPSS 0.89 (0.1 or more): a high score and a real chance of exploitation in the next 30 days.

How we decide what’s critical

Published by the CVE Program (CNA: cisco) at 3 Jun 2026, 16:09 UTC. agentprime has not analysed this yet, so whether it affects any app is not known. This CVE names a vendor and product rather than a package, so the lockfile check doesn’t match it.

Affected products, as the CNA wrote them
VendorProductVersions
Cisco Cisco Unified Communications Manager
  • affected 14
  • affected 14SU1
  • affected 14SU2
  • affected 14SU3
  • affected 15
  • affected 15SU1
  • affected 14SU4
  • affected 14SU4a
  • affected 15SU1a
  • affected 15SU2
  • affected 15.0.1.13010-1
  • affected 15.0.1.13011-1
  • and 10 more
Other versions: unknown
Identifiers
CVE-2026-20230
CNA
cisco
Weakness (CWE)
CWE-918
Tags
Published
3 Jun 2026
Updated
7 Oct 2026

Not analysed yet

We haven’t published our own analysis of this CVE. If a person reviews it, this page will say what’s affected and what has to be true for it to matter.

Severity and exploitation

ScoreRatingCVSSVectorSource
8.6 High 3.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:N CNA (cisco)
  • CISA KEV Listed since 25 Jun 2026: known to be exploited.
  • EPSS 0.89, the 99th percentile, on 5 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

This record came from the full history of the CVE Program, published 3 Jun 2026. New records show when each source confirmed them.

Sources

References from the CNA

Facts on this page come from the CVE List as the CNA published them, with CVSS from the sources named above, CISA KEV and FIRST EPSS. Vendors, products and versions are shown as the CNA wrote them. We don’t reproduce the CVE’s description.