{"description":"Trending threats, MITRE ATT\u0026CK coverage, and detection metadata — refreshed continuously.","feed_url":"https://feed.craftedsignal.io/products/identity-services-engine/","home_page_url":"https://feed.craftedsignal.io/","items":[{"_cs_actors":[],"_cs_cves":[{"cvss":4.8,"id":"CVE-2025-20204"},{"cvss":4.8,"id":"CVE-2025-20205"}],"_cs_exploited":false,"_cs_products":["Identity Services Engine"],"_cs_severities":["medium"],"_cs_tags":["xss","cisco","web-application"],"_cs_type":"advisory","_cs_vendors":["Cisco"],"content_html":"\u003cp\u003eCisco Identity Services Engine (ISE) is susceptible to stored cross-site scripting (XSS) vulnerabilities within its web-based management interface. Disclosed on May 5, 2026, these flaws stem from insufficient validation of user-supplied input. An attacker with valid administrative credentials can inject malicious code into specific pages of the ISE interface. Successful exploitation allows the attacker to execute arbitrary script code within the context of the interface or access sensitive browser-based information. These vulnerabilities pose a risk to the confidentiality and integrity of the ISE system and the data it manages, requiring immediate patching.\u003c/p\u003e\n\u003ch2 id=\"attack-chain\"\u003eAttack Chain\u003c/h2\u003e\n\u003col\u003e\n\u003cli\u003eAn attacker obtains valid administrative credentials for the Cisco ISE web-based management interface, potentially through credential theft or social engineering.\u003c/li\u003e\n\u003cli\u003eThe attacker logs into the ISE web-based management interface.\u003c/li\u003e\n\u003cli\u003eThe attacker navigates to a specific page within the interface that is vulnerable to stored XSS (CVE-2025-20204, CVE-2025-20205).\u003c/li\u003e\n\u003cli\u003eThe attacker injects malicious JavaScript code into a field that is not properly validated. This could be a configuration setting, a user profile, or any other editable field.\u003c/li\u003e\n\u003cli\u003eThe malicious code is stored within the ISE system\u0026rsquo;s database or configuration files.\u003c/li\u003e\n\u003cli\u003eA legitimate administrator or user accesses the page containing the stored XSS payload.\u003c/li\u003e\n\u003cli\u003eThe malicious JavaScript code is executed within the user\u0026rsquo;s browser, in the context of the ISE web interface.\u003c/li\u003e\n\u003cli\u003eThe attacker can now perform actions such as stealing cookies, redirecting the user to a malicious website, or modifying the content of the ISE interface.\u003c/li\u003e\n\u003c/ol\u003e\n\u003ch2 id=\"impact\"\u003eImpact\u003c/h2\u003e\n\u003cp\u003eSuccessful exploitation of these XSS vulnerabilities can compromise the confidentiality and integrity of the Cisco ISE system. An attacker could potentially gain unauthorized access to sensitive information, such as network configurations, user credentials, and security policies. They could also modify the ISE interface to phish for credentials or redirect users to malicious websites. Given the central role of ISE in network access control, these vulnerabilities could have a significant impact on the security of the entire network.\u003c/p\u003e\n\u003ch2 id=\"recommendation\"\u003eRecommendation\u003c/h2\u003e\n\u003cul\u003e\n\u003cli\u003eApply the software updates released by Cisco to address CVE-2025-20204 and CVE-2025-20205 on all affected Cisco Identity Services Engine (ISE) instances.\u003c/li\u003e\n\u003cli\u003eDeploy the Sigma rule \u0026ldquo;Detect Cisco ISE XSS Attempt via HTTP Request\u0026rdquo; to your SIEM to identify potential exploitation attempts targeting the web interface.\u003c/li\u003e\n\u003cli\u003eReview and enforce strong password policies for all administrative accounts on Cisco ISE to reduce the risk of credential compromise.\u003c/li\u003e\n\u003cli\u003eMonitor web server logs for suspicious activity, particularly requests containing potentially malicious JavaScript code, to identify and investigate potential XSS attacks.\u003c/li\u003e\n\u003c/ul\u003e\n","date_modified":"2026-05-05T18:21:38Z","date_published":"2026-05-05T18:21:38Z","id":"/briefs/2026-05-cisco-ise-xss/","summary":"Multiple stored cross-site scripting (XSS) vulnerabilities in the web-based management interface of Cisco Identity Services Engine (ISE) could allow an authenticated, remote attacker to inject malicious code into specific pages of the interface, leading to arbitrary script execution or sensitive information access.","title":"Cisco Identity Services Engine Stored Cross-Site Scripting Vulnerabilities","url":"https://feed.craftedsignal.io/briefs/2026-05-cisco-ise-xss/"}],"language":"en","title":"CraftedSignal Threat Feed — Identity Services Engine","version":"https://jsonfeed.org/version/1.1"}