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Critical [CVE-2026-20181 +1] Cisco Identity Services Engine Remote Code Execution and Information Disclosure Vulnerabilities

This critical-severity Cisco advisory covers CVE-2026-20181 and CVE-2026-20190 affecting Identity Services Engine Software, ISE Passive Identity Connector.

cisco-sa-ise-multi-G5WP8vv Published Jun 19, 2026Updated by vendor Jun 19, 2026
CVE-2026-20181CVE-2026-20190
Affected products & platforms
CiscoISEIdentity Services Engine
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Summary

Multiple vulnerabilities in Cisco Identity Services Engine (ISE) and Cisco ISE Passive Identity Connector (ISE-PIC) could allow a remote attacker to achieve remote code execution or conduct information disclosure attacks on an affected device.

For more information about these vulnerabilities, see the Details section of this advisory.

Cisco has released software updates that address these vulnerabilities. There are no workarounds that address these vulnerabilities.

Affected products named by the advisory: Identity Services Engine Software.

Affected versions
  • Scope: These vulnerabilities affect Cisco ISE and Cisco ISE-PIC, regardless of device configuration.
  • Earlier than 3.3 — Migrate to a fixed release
  • Release 3.3 (first fixed: 3.3 Patch 11)
  • Release 3.4 (first fixed: 3.4 Patch 6)
  • Release 3.5 (first fixed: 3.5 Patch 4 (Aug 2026) or hot patch / 3.5 Patch 3)

Official advisory · high-confidence parse· fetched 2 months ago·verify at source

Fixed versions
  • 3.3 Patch 11
  • 3.4 Patch 6
  • 3.5 Patch 4 (Aug 2026) or hot patch / 3.5 Patch 3

Official advisory · high-confidence parse· fetched 2 months ago·verify at source

Mitigation checklist

Recommended fix / mitigation
  • Upgrade to the first fixed release for your train per the Fixed Releases table in this advisory.
  • Earlier than 3.3: migrate to a fixed release.
  • Release 3.3: upgrade to 3.3 Patch 11.
  • Release 3.4: upgrade to 3.4 Patch 6.
  • Release 3.5: upgrade to 3.5 Patch 4 (Aug 2026) or hot patch / 3.5 Patch 3.
Workaround status
  • There are no workarounds that address these vulnerabilities.

Official advisory · high-confidence parse· fetched 2 months ago·verify at source

Discussion(1)

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