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Highest advisory severityMedium 1 vendor · 1 advisory

CVE-2026-20091

CVE-2026-20091: 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.

NVD detail CVE.org

Vendor advisory comparison

Cisco

1 advisory
  • Advisory severityMedium4.8

    Medium [CVE-2026-20091] Cisco FXOS and UCS Manager Software Stored Cross-Site Scripting Vulnerability

    cisco-sa-ucsfxosxss-7skVE8ZvSource published Source updated

    A vulnerability in the web-based management interface of Cisco FXOS Software and Cisco UCS Manager Software could allow an authenticated, remote attacker to conduct a stored cross-site scripting (XSS) attack against a user of the interface. This vulnerability is due to insufficient validation of user-supplied input by the web-based management interface of an affected system. An attacker could exploit this vulnerability by injecting malicious data into specific pages of the interface. A successful exploit could allow the attacker to execute arbitrary script code in the context of the affecte…

    Related products — impact not confirmed
    • Cisco Unified Computing System (Managed)
    • Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.12.1.2
    • Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.12.1.3
    • Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.12.2.5

    5 more entries in the full advisory.

    Source-reported affected versions
    • Scope: At the time of publication, this vulnerability affected the following Cisco products if they were running a vulnerable release of Cisco FXOS Software or UCS Manager Software:
    • 4.2 and earlier — Migrate to a fixed release
    • Release 4.3 (first fixed: 4.3(6a))
    Source-reported fixed versions
    • 4.3(6a)
    Mitigation guidance
    • Upgrade to the first fixed release for your train per the Fixed Releases table in this advisory.
    • Release 4.2 and earlier: migrate to a fixed release.
    • Release 4.3: upgrade to 4.3(6a).
    Workarounds
    • There are no workarounds that address this vulnerability.
    Full advisory and evidenceOpen source bulletin

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