{"id":"CVE-2025-20327","state":"PUBLISHED","title":"A vulnerability in the web UI of Cisco IOS Software could allow an authenticated, remote attacker with low privileges to cause a denial of service (DoS) condition on an affected de","description":"A vulnerability in the web UI of Cisco IOS Software could allow an authenticated, remote attacker with low privileges to cause a denial of service (DoS) condition on an affected device.\r\n\r This vulnerability is due to improper input validation. An attacker could exploit this vulnerability by sending a crafted URL in an HTTP request. A successful exploit could allow the attacker to cause the affected device to reload, resulting in a DoS condition.","publishedAt":"2025-09-24T17:11:44.744Z","updatedAt":"2025-09-24T18:11:26.278Z","severity":{"score":7.7,"label":"High","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H","source":"cisco"},"assigner":"cisco","products":["Cisco IOS"],"affected":[{"vendor":"Cisco","product":"IOS","versions":[{"version":"15.2(6)E2","status":"affected"},{"version":"15.2(7)E","status":"affected"},{"version":"15.2(6)E2a","status":"affected"},{"version":"15.2(6)E2b","status":"affected"},{"version":"15.2(7)E1","status":"affected"},{"version":"15.2(7)E0a","status":"affected"},{"version":"15.2(7)E0b","status":"affected"},{"version":"15.2(7)E0s","status":"affected"},{"version":"15.2(6)E3","status":"affected"},{"version":"15.2(7)E2","status":"affected"},{"version":"15.2(7a)E0b","status":"affected"},{"version":"15.2(7)E3","status":"affected"},{"version":"15.2(7)E1a","status":"affected"},{"version":"15.2(7b)E0b","status":"affected"},{"version":"15.2(7)E2a","status":"affected"},{"version":"15.2(7)E4","status":"affected"},{"version":"15.2(7)E3k","status":"affected"},{"version":"15.2(8)E","status":"affected"},{"version":"15.2(8)E1","status":"affected"},{"version":"15.2(7)E5","status":"affected"},{"version":"15.2(7)E6","status":"affected"},{"version":"15.2(8)E2","status":"affected"},{"version":"15.2(7)E7","status":"affected"},{"version":"15.2(8)E3","status":"affected"},{"version":"15.2(7)E8","status":"affected"},{"version":"15.2(8)E4","status":"affected"},{"version":"15.2(7)E9","status":"affected"},{"version":"15.2(8)E5","status":"affected"},{"version":"15.2(7)E10","status":"affected"}]}],"references":["https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ios-invalid-url-dos-Nvxszf6u"],"weaknesses":["CWE-1287"],"ingestedAt":"2026-10-29T20:08:39.238Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2025/20xxx/CVE-2025-20327.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.1","cveMetadata":{"cveId":"CVE-2025-20327","state":"PUBLISHED","datePublished":"2025-09-24T17:11:44.744Z","dateUpdated":"2025-09-24T18:11:26.278Z","assignerShortName":"cisco","assignerOrgId":"d1c1063e-7a18-46af-9102-31f8928bc633","dateReserved":"2024-10-10T19:15:13.254Z"},"containers":{"cna":{"descriptions":[{"lang":"en","value":"A vulnerability in the web UI of Cisco IOS Software could allow an authenticated, remote attacker with low privileges to cause a denial of service (DoS) condition on an affected device.\r\n\r This vulnerability is due to improper input validation. An attacker could exploit this vulnerability by sending a crafted URL in an HTTP request. A successful exploit could allow the attacker to cause the affected device to reload, resulting in a DoS condition."}],"affected":[{"vendor":"Cisco","product":"IOS","versions":[{"version":"15.2(6)E2","status":"affected"},{"version":"15.2(7)E","status":"affected"},{"version":"15.2(6)E2a","status":"affected"},{"version":"15.2(6)E2b","status":"affected"},{"version":"15.2(7)E1","status":"affected"},{"version":"15.2(7)E0a","status":"affected"},{"version":"15.2(7)E0b","status":"affected"},{"version":"15.2(7)E0s","status":"affected"},{"version":"15.2(6)E3","status":"affected"},{"version":"15.2(7)E2","status":"affected"},{"version":"15.2(7a)E0b","status":"affected"},{"version":"15.2(7)E3","status":"affected"},{"version":"15.2(7)E1a","status":"affected"},{"version":"15.2(7b)E0b","status":"affected"},{"version":"15.2(7)E2a","status":"affected"},{"version":"15.2(7)E4","status":"affected"},{"version":"15.2(7)E3k","status":"affected"},{"version":"15.2(8)E","status":"affected"},{"version":"15.2(8)E1","status":"affected"},{"version":"15.2(7)E5","status":"affected"},{"version":"15.2(7)E6","status":"affected"},{"version":"15.2(8)E2","status":"affected"},{"version":"15.2(7)E7","status":"affected"},{"version":"15.2(8)E3","status":"affected"},{"version":"15.2(7)E8","status":"affected"},{"version":"15.2(8)E4","status":"affected"},{"version":"15.2(7)E9","status":"affected"},{"version":"15.2(8)E5","status":"affected"},{"version":"15.2(7)E10","status":"affected"}]}],"references":[{"url":"https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ios-invalid-url-dos-Nvxszf6u","name":"cisco-sa-ios-invalid-url-dos-Nvxszf6u"}],"metrics":[{"format":"cvssV3_1","cvssV3_1":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H","baseScore":7.7,"baseSeverity":"HIGH","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"NONE","scope":"CHANGED","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"HIGH"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-1287","lang":"en","description":"Improper Validation of Specified Type of Input","type":"cwe"}]}],"providerMetadata":{"shortName":"cisco","orgId":"d1c1063e-7a18-46af-9102-31f8928bc633","dateUpdated":"2025-09-24T17:11:44.744Z"},"exploits":[{"lang":"en","value":"The Cisco Product Security Incident Response Team (PSIRT) is not aware of any public announcements or malicious use of the vulnerability that is described in this advisory."}],"source":{"advisory":"cisco-sa-ios-invalid-url-dos-Nvxszf6u","discovery":"EXTERNAL","defects":["CSCwo34150"]}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2025-09-24T18:08:55.351442Z","id":"CVE-2025-20327","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2025-09-24T18:11:26.278Z"}}]}}}