Advisory severityMedium5.5Cisco

Medium [CVE-2026-20146] Cisco Identity Services Engine Path Traversal Vulnerability

This medium-severity Cisco advisory covers CVE-2026-20146 affecting Identity Services Engine Software, ISE Passive Identity Connector.

Aggregated and source-linked by VulniPulse. Data sources, validation and limitations.

cisco-sa-ise-traversal-xNt7wb2Y Source published Jul 15, 2026Source updated Jul 15, 2026

VulniPulse record published Jul 15, 2026Record updated Aug 21, 2026

CVE-2026-20146

Affected products & platforms

CiscoISEIdentity Services Engine

Open source advisory

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Summary

A vulnerability in Cisco Identity Services Engine (ISE) and Cisco ISE Passive Identity Connector (ISE-PIC) could allow an authenticated, remote attacker to perform path traversal attacks on the underlying operating system to either read or delete arbitrary files. The flaw is caused by improper validation of user-supplied input.

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

Affected versions

Scope: At the time of publication, this vulnerability affected 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 12 (Sep 2026))
Release 3.4 (first fixed: 3.4 Patch 7 (Sep 2026) or hot patch)
Release 3.51 (first fixed: 3.5 Patch 4 (Sep 2026) or hot patch)

Official advisory · high-confidence parse· fetched 18 hours ago·verify at source

Fixed versions

3.3 Patch 12 (Sep 2026)
3.4 Patch 7 (Sep 2026) or hot patch
3.5 Patch 4 (Sep 2026) or hot patch

Official advisory · high-confidence parse· fetched 18 hours 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 12 (Sep 2026).
Release 3.4: upgrade to 3.4 Patch 7 (Sep 2026) or hot patch.
Release 3.51: upgrade to 3.5 Patch 4 (Sep 2026) or hot patch.

Workaround status

There are no workarounds that address this vulnerability.

Official advisory · high-confidence parse· fetched 18 hours ago·verify at source

Sources

Official and corroborating records used to build this advisory.

Cisco Security Advisoriesofficial
Official vendor source used to discover this advisory; it remains the authority for affected products and remediation. Discovered from the machine-readable feed https://sec.cloudapps.cisco.com/security/center/psirtrss20/CiscoSecurityAdvisory.xml; this link opens the Cisco advisory index instead of the raw feed document.
Cisco
Official vendor advisoryofficial
Official advisory page fetched and parsed; accepted detail fields are attributed to this page.
Cisco

Cross-references

Validate CVE metadata against the authoritative registries.

CVE-2026-20146NVD CVE.org MITRE

Official resources

Cisco ISE upgrade guide (target: 3.3 / 3.4 / 3.5)
Official documentation
This advisory names 3.3 / 3.4 / 3.5 as the first fixed releases — official upgrade documentation for Cisco Identity Services Engine (ISE).
Cisco ISE release notes
Release notes
Release notes and resolved-caveats list for the fixed ISE version.

Discussion(0)

No comments yet. Share field notes, upgrade gotchas, or questions — verify against the vendor advisory before acting on community advice.