{"id":"CVE-2021-1397","url":"https://www.cyber-defence.io/tools/cve/CVE-2021-1397","generatedAt":"2026-10-27T22:24:51.575Z","title":"A vulnerability in the web-based management interface of Cisco Integrated Management Controller (IMC) Software could allow an unauthenticated, remote attacker to redirect a user to a malicious web page.","description":"A vulnerability in the web-based management interface of Cisco Integrated Management Controller (IMC) Software could allow an unauthenticated, remote attacker to redirect a user to a malicious web page. This vulnerability is due to improper input validation of the parameters in an HTTP request. An attacker could exploit this vulnerability by persuading a user to click a crafted link. A successful exploit could allow the attacker to redirect a user to a malicious website. This vulnerability is known as an open redirect attack, which is used in phishing attacks to get users to visit malicious sites without their knowledge.","published":"2021-05-06T13:15:10.000Z","lastModified":"2026-06-17T03:31:41.000Z","status":"Modified","sourceIdentifier":"psirt@cisco.com","cvss":{"version":"3.1","score":6.1,"severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N"},"cwe":["CWE-601"],"affected":["cisco/integrated management controller","cisco/ucs manager","cisco/encs 5100 firmware","cisco/encs 5400 firmware","cisco/c220 m6 firmware","cisco/c225 m6 firmware","cisco/c240 m6 firmware","cisco/c245 m6 firmware","cisco/c125 m5 firmware","cisco/c220 m5 firmware","cisco/c240 m5 firmware","cisco/c480 m5 firmware","cisco/c480 ml m5 firmware","cisco/ucs-e140s firmware","cisco/ucs-e140d firmware","cisco/ucs-e160d firmware","cisco/ucs-e160s-m3 firmware","cisco/ucs-e180d-m3 firmware","cisco/ucs-e1120d-m3 firmware","cisco/ucs-e140s-m2 firmware","cisco/ucs-e180d-m2 firmware","cisco/ucs-e140s-m1 firmware","cisco/ucs-e140dp firmware","cisco/ucs-e160dp-m1 firmware","cisco/ucs s3260 firmware"],"epss":{"score":0.00831,"percentile":0.57318,"date":"2026-10-26","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"low","text":"Lower severity and a low EPSS score (0.83%). Track it; it rarely justifies an emergency change on its own."},"changes":[],"references":[{"url":"https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-imc-openred-zAYrU6d2","tags":["Vendor Advisory"],"source":"psirt@cisco.com"},{"url":"https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-imc-openred-zAYrU6d2","tags":["Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2021-1397","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}