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Highest advisory severityMedium 1 vendor · 1 advisory

CVE-2026-20309

CVE-2026-20309: 1 tracked advisory record across Cisco. Compare vendor sources and published fix guidance.

Compare the source-linked records below. Ratings and product/version details belong to each advisory; they are not a single CVE-wide score or proof that every listed product is affected. How VulniPulse collects and checks evidence.

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Vendor advisory comparison

Cisco

1 advisory
  • Advisory severityMedium6.1

    Medium [CVE-2026-20309] Cisco Identity Services Engine Cross-Site Scripting Vulnerability

    cisco-sa-ise-xss-Uz9VWRQSource published Source updated

    A vulnerability in the web-based management interface of Cisco Identity Services Engine (ISE) could allow an unauthenticated, remote attacker to conduct a reflected cross-site scripting (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 of the interface 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. Cisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability. This advisory is part of a group of…

    Affected products in this advisory
    • Identity Services Engine Software
    Source-reported affected versions
    • Scope: At the time of publication, this vulnerability affected Cisco ISE, regardless of device configuration.
    • 3.2 and earlier — Migrate to a fixed release
    • Release 3.3 (first fixed: 3.3 Patch 12)
    • Release 3.4 (first fixed: 3.4 Patch 7)

    1 more entries in the full advisory.

    Source-reported fixed versions
    • 3.3 Patch 12
    • 3.4 Patch 7
    • 3.5 Patch 4
    Mitigation guidance
    • Upgrade to the first fixed release for your train per the Fixed Releases table in this advisory.
    • Release 3.2 and earlier: migrate to a fixed release.
    • Release 3.3: upgrade to 3.3 Patch 12.
    • Release 3.4: upgrade to 3.4 Patch 7.

    1 more entries in the full advisory.

    Workarounds
    • There are no workarounds that address this vulnerability.
    Full advisory and evidenceOpen source bulletin

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