Cisco Integrated Management Controller Cross-Site Scripting Vulnerabilities

cisco-sa-cimc-xss-A2tkgVAB · Cisco · April 1, 2026

Summary

Multiple vulnerabilities in the web-based management interface of Cisco Integrated Management Controller (IMC) could allow a remote attacker to conduct a cross-site scripting (XSS) attack against a user of the interface. For more information about these vulnerabilities, see the Details ["#details"] section of this advisory. Cisco has released software updates that address these vulnerabilities. There are no workarounds that address these vulnerabilities.

From Cisco (vendor's own words, quoted), quoted as published. Check the source before acting.

What to do

Cisco has released software updates that address this vulnerability.

Vendor fix or mitigation, quoted from the advisory.

Each CVE in this advisory

CVE	Severity	Known exploited	Exploit likelihood	Weakness
CVE-2026-20087	4.8 medium	No	0.2%	—
CVE-2026-20085	6.1 medium	No	0.2%	—
CVE-2026-20088	4.8 medium	No	0.2%	—
CVE-2026-20090	4.8 medium	No	0.2%	—
CVE-2026-20089	4.8 medium	No	0.2%	—

Severity from the advisory (CVSS), known exploitation from CISA's catalog, exploit likelihood from EPSS (next 30 days).

Affected products

Vendor	Product	Affected versions	Fixed
Cisco	Cisco Unified Computing System (Standalone)	3.1, 4.0, 4.1, 4.2, 4.3, 6.0	—
Cisco	Cisco Unified Computing System E-Series Software (UCSE)	3.2, 3.1, 4.11, 4.12, 4.15	—
Cisco	Cisco Enterprise NFV Infrastructure Software	3.5, 3.6, 3.7, 3.8, 3.9, 3.10, 3.11, 3.12, 4.1, 3.3, 3.4, 4.2, 4.4, 4.5, 4.6, 4.7, 4.8, 4.9, 4.10, 4.11	—
Cisco	Cisco UCS S-Series Storage Servers	—	—
Cisco	Cisco UCS C-Series Rack-Mount Standalone Server Software	—	—
Cisco	Cisco UCS E-Series Servers	—	—
Cisco	Cisco 5000 Series Enterprise Network Compute System	—	—

Why it's on these mode pages

Maritime: Vendor table: Cisco (network and remote-access gear used in every mode, all modes) (matched by rule)
Pipeline: Vendor table: Cisco (network and remote-access gear used in every mode, all modes) (matched by rule)
Freight rail: Vendor table: Cisco (network and remote-access gear used in every mode, all modes) (matched by rule)
Passenger rail and transit: Vendor table: Cisco (network and remote-access gear used in every mode, all modes) (matched by rule)
Highway and motor carrier: Vendor table: Cisco (network and remote-access gear used in every mode, all modes) (matched by rule)
Postal and parcel: Vendor table: Cisco (network and remote-access gear used in every mode, all modes) (matched by rule)

Change history

April 1, 2026: Initial public release.
April 22, 2026: Updated fix information for Cisco Secure Network Analytics and Cisco Telemetry Broker.
November 9, 2026: First collected by Watch

Securidigm Scout can match advisories like this one to the equipment on your own network, offline. securidigm.com