{"id":"CVE-2026-20029","published":"2026-01-07T16:23:43Z","modified":"2026-01-07T16:40:58Z","title":"Cisco Identity Services Engine XML External Entity Processing Information Disclosure Vulnerability","vendor":"Cisco","product":"Cisco Identity Services Engine Software","tier":"core","eol":null,"affectedVersions":[{"vendor":"Cisco","product":"Cisco Identity Services Engine Software","versions":["3.1.0","3.1.0 p1","3.1.0 p3","3.1.0 p2","3.2.0","3.1.0 p4","3.1.0 p5","3.2.0 p1","3.1.0 p6","3.2.0 p2"]}],"description":{"text":"A vulnerability in the licensing features of Cisco Identity Services Engine (ISE) and Cisco ISE Passive Identity Connector (ISE-PIC) could allow an authenticated, remote attacker with administrative privileges to gain access to sensitive information. \r\n\r\nThis vulnerability is due to improper parsing of XML that is processed by the web-based management interface of Cisco ISE and Cisco ISE-PIC. An attacker could exploit this vulnerability by uploading a malicious file to the application. A successful exploit could allow the attacker to read arbitrary files from the underlying operating system that could include sensitive data that should otherwise be inaccessible even to administrators. To exploit this vulnerability, the attacker must have valid administrative credentials.","provenance":"source","from":"CVE.org"},"summary":null,"cvss":{"score":4.9,"severity":"MEDIUM","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N","provenance":"source","from":"CVE.org CNA"},"epss":{"score":0.06084,"percentile":0.93404,"date":"2026-10-30","provenance":"source"},"kev":null,"vulncheckKev":{"dateAdded":"2026-02-24","exploitedFirstSeen":"2026-02-24","ransomware":false,"evidence":[{"url":"https://www.recordedfuture.com/blog/january-2026-cve-landscape","date":"2026-02-24"}],"evidenceTotal":1,"provenance":"source"},"exploited":true,"otx":{"pulseCount":2,"pulses":[{"name":"CVE Research 2026","url":"https://otx.alienvault.com/pulse/69b1e183a12a96a0f1df32cf","created":"2026-03-11"},{"name":"January 2026 CVE Landscape: 23 Critical Vulnerabilities Mark 5% Increase, APT28 Exploits Microsoft Office Zero-Day","url":"https://otx.alienvault.com/pulse/699f49420964bfc335200f66","created":"2026-02-25"}],"provenance":"machine"},"cwes":[{"id":"CWE-611","name":"Improper Restriction of XML External Entity Reference"}],"references":[{"url":"https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ise-xxe-jWSbSDKt","tags":[]}],"techniques":[],"reports":[],"affected":[],"advisories":[],"euvd":{"id":"EUVD-2026-1197","url":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-1197","exploited":false,"exploitedSince":null,"provenance":"source"},"exploits":[],"exploitSources":null,"exploitRefs":[],"flow":[],"timeline":[{"date":"2026-01-07","kind":"published","label":"Published (CVE.org)","url":"https://www.cve.org/CVERecord?id=CVE-2026-20029","provenance":"source"},{"date":"2026-02-24","kind":"exploited-reported","label":"Exploitation first reported (VulnCheck KEV evidence)","url":"https://www.recordedfuture.com/blog/january-2026-cve-landscape","provenance":"source"}],"speed":{"daysToPublicExploit":null,"firstExploitFrom":null,"daysToKev":null},"priority":{"score":63.2,"factors":[{"name":"In a KEV catalog","points":35.0,"detail":"listed in VulnCheck KEV"},{"name":"Recent KEV listing","points":5.0,"detail":"added 249 days ago"},{"name":"Known ransomware use","points":0.0,"detail":"not known"},{"name":"EPSS percentile","points":18.68,"detail":"percentile 0.9340"},{"name":"Named in threat reports","points":0.0,"detail":"0 reports"},{"name":"Public exploit code","points":0.0,"detail":"none found"},{"name":"Mentioned in OTX pulses","points":1.08,"detail":"2 pulses"},{"name":"CVSS severity","points":3.43,"detail":"base score 4.9"},{"name":"End-of-life product","points":0.0,"detail":"supported or unknown"}]}}