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CVE-2026-20192: cisco cisco identity services engine software Improper Access Control

CVSS: 10.0v3.1CriticalAnalyzed
Published 16-09-2026Last modified 18-09-2026
Open JSON

Vulnerability summary

CVE-2026-20192 is a critical (CVSS 10.0) Improper Access Control vulnerability in cisco cisco identity services engine software. EPSS estimates a 0.46% chance of exploitation in the next 30 days, higher than 38.3% of scored vulnerabilities.

Overall risk
70/100
0100
High · default modelHow is this calculated?
CVSS score
10.0/10
010
Critical · v3.1 (CVE.org)
EPSS score
0.46%
0%100%
Low · +0.03 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 16-09-2026
    PublishedVulnerability first disclosed.
  2. 18-09-2026
    Last modifiedVulnerability information updated.

Description

As part of Cisco's ongoing commitment to proactive security and product quality, the Cisco Identity Services Engine (ISE) and Cisco ISE Passive Identity Connector (ISE-PIC) engineering teams have conducted a comprehensive internal security review. This review resulted in a software hardening release that addresses multiple internally discovered vulnerabilities. The vulnerabilities tracked by CVE-2026-20192 are related to improper access control issues that are grouped under the Common Weakness Enumeration (CWE) Pillar CWE-284.

CVSS metrics

2 scores · 2 sources · 1 version

EPSS trend

Probability

0.46%

Chance of exploitation in the next 30 days

Percentile

38%

Versus all other CVEs

30-day change

+0.03 pp

From 0.43% on 19-09-2026

19-09-202619-10-2026
EPSS score
0.46%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Cisco4 products
  • cisco identity services engine software3.1.0 | 3.1.0 p1 | 3.1.0 p3 | 3.1.0 p2 | 3.2.0 | 3.1.0 p4 | 3.1.0 p5 | 3.2.0 p1 | 3.1.0 p6 | 3.2.0 p2 | 3.1.0 p7 | 3.3.0 | 3.2.0 p3 | 3.2.0 p4 | 3.1.0 p8 | 3.2.0 p5 | 3.2.0 p6 | 3.1.0 p9 | 3.3 Patch 2 | 3.3 Patch 1 | 3.3 Patch 3 | 3.4.0 | 3.2.0 p7 | 3.3 Patch 4 | 3.4 Patch 1 | 3.1.0 p10 | 3.3 Patch 5 | 3.3 Patch 6 | 3.4 Patch 2 | 3.3 Patch 7 | 3.4 Patch 3 | 3.5.0 | 3.4 Patch 4 | 3.3 Patch 8 | 3.2 Patch 8 | 3.5 Patch 1 | 3.3 Patch 9 | 3.2 Patch 9 | 3.4 Patch 5 | 3.5 Patch 3 | 3.5 Patch 2 | 3.3 Patch 10 | 3.3 Patch 11 | 3.4 Patch 6 | 3.2 Patch 10 | 3.1.0 p72 | 3.1.0 p11
  • cisco ise passive identity connector3.2.0 | 3.1.0 | 3.3.0 | 3.4.0 | 3.5.0
  • identity_services_engine≥ 3.1.0, < 3.3.0 | 3.3.0:patch1 | 3.3.0:patch10 | 3.3.0:patch11 | 3.3.0:patch2 | 3.3.0:patch3 | 3.3.0:patch4 | 3.3.0:patch5 | 3.3.0:patch6 | 3.3.0:patch7 | 3.3.0:patch8 | 3.3.0:patch9 | 3.4.0 | 3.4.0:patch1 | 3.4.0:patch2 | 3.4.0:patch3 | 3.4.0:patch4 | 3.4.0:patch5 | 3.4.0:patch6 | 3.5.0 | 3.5.0:patch1 | 3.5.0:patch2 | 3.5.0:patch3
  • identity_services_engine_passive_identity_connector≥ 3.1.0, < 3.3.0 | 3.3.0:patch1 | 3.3.0:patch10 | 3.3.0:patch11 | 3.3.0:patch2 | 3.3.0:patch3 | 3.3.0:patch4 | 3.3.0:patch5 | 3.3.0:patch6 | 3.3.0:patch7 | 3.3.0:patch8 | 3.3.0:patch9 | 3.4.0 | 3.4.0:patch1 | 3.4.0:patch2 | 3.4.0:patch3 | 3.4.0:patch4 | 3.4.0:patch5 | 3.4.0:patch6

1 vendor · 4 products

References

1 links