{"id":"CVE-2023-22916","state":"PUBLISHED","title":"The configuration parser of Zyxel ATP series firmware versions 5.10 through 5.35, USG FLEX series firmware versions 5.00 through 5.35, USG FLEX 50(W) firmware versions 5.10 through","description":"The configuration parser of Zyxel ATP series firmware versions 5.10 through 5.35, USG FLEX series firmware versions 5.00 through 5.35, USG FLEX 50(W) firmware versions 5.10 through 5.35, USG20(W)-VPN firmware versions 5.10 through 5.35, and VPN series firmware versions 5.00 through 5.35, which fails to properly sanitize user input. A remote unauthenticated attacker could leverage the vulnerability to modify device configuration data, resulting in DoS conditions on an affected device if the attacker could trick an authorized administrator to switch the management mode to the cloud mode.","publishedAt":"2023-04-24T00:00:00.000Z","updatedAt":"2025-02-12T16:42:02.320Z","severity":{"score":8.1,"label":"High","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:H","source":"Zyxel"},"assigner":"Zyxel","products":["Zyxel ATP series firmware","Zyxel USG FLEX series firmware","Zyxel USG FLEX 50(W) firmware","Zyxel USG20(W)-VPN firmware","Zyxel VPN series firmware"],"affected":[{"vendor":"Zyxel","product":"ATP series firmware","versions":[{"version":"5.10 through 5.35","status":"affected"}]},{"vendor":"Zyxel","product":"USG FLEX series firmware","versions":[{"version":"5.00 through 5.35","status":"affected"}]},{"vendor":"Zyxel","product":"USG FLEX 50(W) firmware","versions":[{"version":"5.10 through 5.35","status":"affected"}]},{"vendor":"Zyxel","product":"USG20(W)-VPN firmware","versions":[{"version":"5.10 through 5.35","status":"affected"}]},{"vendor":"Zyxel","product":"VPN series firmware","versions":[{"version":"5.00 through 5.35","status":"affected"}]}],"references":["https://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for-multiple-vulnerabilities-of-firewalls-and-aps"],"weaknesses":["CWE-20"],"ingestedAt":"2026-10-29T20:05:43.909Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2023/22xxx/CVE-2023-22916.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.1","cveMetadata":{"cveId":"CVE-2023-22916","state":"PUBLISHED","datePublished":"2023-04-24T00:00:00.000Z","dateUpdated":"2025-02-12T16:42:02.320Z","assignerShortName":"Zyxel","assignerOrgId":"96e50032-ad0d-4058-a115-4d2c13821f9f","dateReserved":"2023-01-10T00:00:00.000Z"},"containers":{"cna":{"descriptions":[{"lang":"en","value":"The configuration parser of Zyxel ATP series firmware versions 5.10 through 5.35, USG FLEX series firmware versions 5.00 through 5.35, USG FLEX 50(W) firmware versions 5.10 through 5.35, USG20(W)-VPN firmware versions 5.10 through 5.35, and VPN series firmware versions 5.00 through 5.35, which fails to properly sanitize user input. A remote unauthenticated attacker could leverage the vulnerability to modify device configuration data, resulting in DoS conditions on an affected device if the attacker could trick an authorized administrator to switch the management mode to the cloud mode."}],"affected":[{"vendor":"Zyxel","product":"ATP series firmware","versions":[{"version":"5.10 through 5.35","status":"affected"}]},{"vendor":"Zyxel","product":"USG FLEX series firmware","versions":[{"version":"5.00 through 5.35","status":"affected"}]},{"vendor":"Zyxel","product":"USG FLEX 50(W) firmware","versions":[{"version":"5.10 through 5.35","status":"affected"}]},{"vendor":"Zyxel","product":"USG20(W)-VPN firmware","versions":[{"version":"5.10 through 5.35","status":"affected"}]},{"vendor":"Zyxel","product":"VPN series firmware","versions":[{"version":"5.00 through 5.35","status":"affected"}]}],"references":[{"url":"https://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for-multiple-vulnerabilities-of-firewalls-and-aps"}],"metrics":[{"cvssV3_1":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:H","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"REQUIRED","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"HIGH","availabilityImpact":"HIGH","baseScore":8.1,"baseSeverity":"HIGH"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-20","type":"CWE","lang":"en","description":"CWE-20: Improper Input Validation"}]}],"providerMetadata":{"shortName":"Zyxel","orgId":"96e50032-ad0d-4058-a115-4d2c13821f9f","dateUpdated":"2023-04-24T00:00:00.000Z"}},"adp":[{"title":"CVE Program Container","references":[{"url":"https://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for-multiple-vulnerabilities-of-firewalls-and-aps","tags":["x_transferred"]}],"providerMetadata":{"shortName":"CVE","orgId":"af854a3a-2127-422b-91ae-364da2661108","dateUpdated":"2024-08-02T10:20:31.475Z"}},{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2025-02-04T16:37:35.614852Z","id":"CVE-2023-22916","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"total"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2025-02-12T16:42:02.320Z"}}]}}}