{"dataType": "CVE_RECORD", "dataVersion": "5.1", "cveMetadata": {"state": "PUBLISHED", "cveId": "CVE-2023-27991", "assignerOrgId": "96e50032-ad0d-4058-a115-4d2c13821f9f", "assignerShortName": "Zyxel", "dateUpdated": "2025-02-04T16:47:55.646Z", "dateReserved": "2023-03-09T00:00:00.000Z", "datePublished": "2023-04-24T00:00:00.000Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "96e50032-ad0d-4058-a115-4d2c13821f9f", "shortName": "Zyxel", "dateUpdated": "2023-04-24T00:00:00.000Z"}, "descriptions": [{"lang": "en", "value": "The post-authentication command injection vulnerability in the CLI command of Zyxel ATP series firmware versions 4.32 through 5.35, USG FLEX series firmware versions 4.50 through 5.35, USG FLEX 50(W) firmware versions 4.16 through 5.35, USG20(W)-VPN firmware versions 4.16 through 5.35, and VPN series firmware versions 4.30 through 5.35, which could allow an authenticated attacker to execute some OS commands remotely."}], "affected": [{"vendor": "Zyxel", "product": "ATP series firmware", "versions": [{"version": "4.32 through 5.35", "status": "affected"}]}, {"vendor": "Zyxel", "product": "USG FLEX series firmware", "versions": [{"version": "4.50 through 5.35", "status": "affected"}]}, {"vendor": "Zyxel", "product": "USG FLEX 50(W) firmware", "versions": [{"version": "4.16 through 5.35", "status": "affected"}]}, {"vendor": "Zyxel", "product": "USG20(W)-VPN firmware", "versions": [{"version": "4.16 through 5.35", "status": "affected"}]}, {"vendor": "Zyxel", "product": "VPN series firmware", "versions": [{"version": "4.30 through 5.35", "status": "affected"}]}], "references": [{"url": "https://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for-xss-vulnerability-and-post-authentication-command-injection-vulnerability-in-firewalls"}], "metrics": [{"cvssV3_1": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "LOW", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "HIGH", "baseScore": 8.8, "baseSeverity": "HIGH"}}], "problemTypes": [{"descriptions": [{"type": "CWE", "lang": "en", "description": "CWE-78: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')", "cweId": "CWE-78"}]}]}, "adp": [{"providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-02T12:23:30.834Z"}, "title": "CVE Program Container", "references": [{"url": "https://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for-xss-vulnerability-and-post-authentication-command-injection-vulnerability-in-firewalls", "tags": ["x_transferred"]}]}, {"metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2025-02-04T16:47:50.878412Z", "id": "CVE-2023-27991", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "total"}], "role": "CISA Coordinator", "version": "2.0.3"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2025-02-04T16:47:55.646Z"}}]}}

{"dataType": "CVE_RECORD", "containers": {"adp": [{"title": "CVE Program Container", "references": [{"url": "https://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for-xss-vulnerability-and-post-authentication-command-injection-vulnerability-in-firewalls", "tags": ["x_transferred"]}], "providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-02T12:23:30.834Z"}}, {"title": "CISA ADP Vulnrichment", "metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2023-27991", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "total"}], "version": "2.0.3", "timestamp": "2025-02-04T16:47:50.878412Z"}}}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2025-02-04T16:34:21.413Z"}}], "cna": {"metrics": [{"cvssV3_1": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 8.8, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "HIGH"}}], "affected": [{"vendor": "Zyxel", "product": "ATP series firmware", "versions": [{"status": "affected", "version": "4.32 through 5.35"}]}, {"vendor": "Zyxel", "product": "USG FLEX series firmware", "versions": [{"status": "affected", "version": "4.50 through 5.35"}]}, {"vendor": "Zyxel", "product": "USG FLEX 50(W) firmware", "versions": [{"status": "affected", "version": "4.16 through 5.35"}]}, {"vendor": "Zyxel", "product": "USG20(W)-VPN firmware", "versions": [{"status": "affected", "version": "4.16 through 5.35"}]}, {"vendor": "Zyxel", "product": "VPN series firmware", "versions": [{"status": "affected", "version": "4.30 through 5.35"}]}], "references": [{"url": "https://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for-xss-vulnerability-and-post-authentication-command-injection-vulnerability-in-firewalls"}], "descriptions": [{"lang": "en", "value": "The post-authentication command injection vulnerability in the CLI command of Zyxel ATP series firmware versions 4.32 through 5.35, USG FLEX series firmware versions 4.50 through 5.35, USG FLEX 50(W) firmware versions 4.16 through 5.35, USG20(W)-VPN firmware versions 4.16 through 5.35, and VPN series firmware versions 4.30 through 5.35, which could allow an authenticated attacker to execute some OS commands remotely."}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-78", "description": "CWE-78: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')"}]}], "providerMetadata": {"orgId": "96e50032-ad0d-4058-a115-4d2c13821f9f", "shortName": "Zyxel", "dateUpdated": "2023-04-24T00:00:00.000Z"}}}, "cveMetadata": {"cveId": "CVE-2023-27991", "state": "PUBLISHED", "dateUpdated": "2025-02-04T16:47:55.646Z", "dateReserved": "2023-03-09T00:00:00.000Z", "assignerOrgId": "96e50032-ad0d-4058-a115-4d2c13821f9f", "datePublished": "2023-04-24T00:00:00.000Z", "assignerShortName": "Zyxel"}, "dataVersion": "5.1"}

{"configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:zyxel:atp200_firmware:*:*:*:*:*:*:*:*", "matchCriteriaId": "84A41F09-4474-4ABC-B2FA-92B17F63A7CA", "versionEndExcluding": "5.36", "versionStartIncluding": "4.32", "vulnerable": true}], "negate": false, "operator": "OR"}, {"cpeMatch": [{"criteria": "cpe:2.3:h:zyxel:atp200:-:*:*:*:*:*:*:*", "matchCriteriaId": "D68A36FF-8CAF-401C-9F18-94F3A2405CF4", "vulnerable": false}], "negate": false, "operator": "OR"}], "operator": "AND"}, {"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:zyxel:atp100_firmware:*:*:*:*:*:*:*:*", "matchCriteriaId": "73E39B94-291E-4E3A-8A89-B74FF063BA05", "versionEndExcluding": "5.36", "versionStartIncluding": "4.32", "vulnerable": true}], "negate": false, "operator": "OR"}, {"cpeMatch": [{"criteria": "cpe:2.3:h:zyxel:atp100:-:*:*:*:*:*:*:*", "matchCriteriaId": "7F7654A1-3806-41C7-82D4-46B0CD7EE53B", "vulnerable": false}], "negate": false, "operator": "OR"}], "operator": "AND"}, {"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:zyxel:atp700_firmware:*:*:*:*:*:*:*:*", "matchCriteriaId": "7728D2C4-0B0A-404E-92BC-AAA1A1987BFD", "versionEndExcluding": "5.36", "versionStartIncluding": "4.32", "vulnerable": true}], "negate": false, "operator": "OR"}, {"cpeMatch": [{"criteria": "cpe:2.3:h:zyxel:atp700:-:*:*:*:*:*:*:*", "matchCriteriaId": "0B41F437-855B-4490-8011-DF59887BE6D5", "vulnerable": false}], "negate": false, "operator": "OR"}], "operator": "AND"}, {"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:zyxel:atp500_firmware:*:*:*:*:*:*:*:*", "matchCriteriaId": "8B7E5F75-5577-4511-A1F4-1BD142D60BD5", "versionEndExcluding": "5.36", "versionStartIncluding": "4.32", "vulnerable": true}], "negate": false, "operator": "OR"}, {"cpeMatch": [{"criteria": "cpe:2.3:h:zyxel:atp500:-:*:*:*:*:*:*:*", "matchCriteriaId": "2818E8AC-FFEE-4DF9-BF3F-C75166C0E851", "vulnerable": false}], "negate": false, "operator": "OR"}], "operator": "AND"}, {"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:zyxel:atp100w_firmware:*:*:*:*:*:*:*:*", "matchCriteriaId": "B8F79940-F737-4A71-9FAC-1F99E0BCE450", "versionEndExcluding": "5.36", "versionStartIncluding": "4.32", "vulnerable": true}], "negate": false, "operator": "OR"}, {"cpeMatch": [{"criteria": "cpe:2.3:h:zyxel:atp100w:-:*:*:*:*:*:*:*", "matchCriteriaId": "47398FD0-6C5E-4625-9EFD-DE08C9AB7DB2", "vulnerable": false}], "negate": false, "operator": "OR"}], "operator": "AND"}, {"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:zyxel:atp800_firmware:*:*:*:*:*:*:*:*", "matchCriteriaId": "791D6928-BE82-4678-A8A4-39C9D9A1C684", "versionEndExcluding": "5.36", "versionStartIncluding": "4.32", "vulnerable": true}], "negate": false, "operator": "OR"}, {"cpeMatch": [{"criteria": "cpe:2.3:h:zyxel:atp800:-:*:*:*:*:*:*:*", "matchCriteriaId": "66B99746-0589-46E6-9CBD-F38619AD97DC", "vulnerable": false}], "negate": false, "operator": "OR"}], "operator": "AND"}, {"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:zyxel:usg_flex_100_firmware:*:*:*:*:*:*:*:*", "matchCriteriaId": "FC95F84E-95A0-4FB8-942A-732E022E3CC6", "versionEndExcluding": "5.36", "versionStartIncluding": "4.50", "vulnerable": true}], "negate": false, "operator": "OR"}, {"cpeMatch": [{"criteria": "cpe:2.3:h:zyxel:usg_flex_100:-:*:*:*:*:*:*:*", "matchCriteriaId": "2B30A4C0-9928-46AD-9210-C25656FB43FB", "vulnerable": false}], "negate": false, "operator": "OR"}], "operator": "AND"}, {"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:zyxel:usg_flex_50_firmware:*:*:*:*:*:*:*:*", "matchCriteriaId": "07895A23-2B15-4631-A55A-798B35A63E2D", "versionEndExcluding": "5.36", "versionStartIncluding": "4.50", "vulnerable": true}], "negate": false, "operator": "OR"}, {"cpeMatch": [{"criteria": "cpe:2.3:h:zyxel:usg_flex_50:-:*:*:*:*:*:*:*", "matchCriteriaId": "646C1F07-B553-47B0-953B-DC7DE7FD0F8B", "vulnerable": false}], "negate": false, "operator": "OR"}], "operator": "AND"}, {"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:zyxel:usg_flex_200_firmware:*:*:*:*:*:*:*:*", "matchCriteriaId": "F65ACDFE-3A54-46D6-98CA-2D51957072AF", "versionEndExcluding": "5.36", "versionStartIncluding": "4.50", "vulnerable": true}], "negate": false, "operator": "OR"}, {"cpeMatch": [{"criteria": "cpe:2.3:h:zyxel:usg_flex_200:-:*:*:*:*:*:*:*", "matchCriteriaId": "F93B6A06-2951-46D2-A7E1-103D7318D612", "vulnerable": false}], "negate": false, "operator": "OR"}], "operator": "AND"}, {"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:zyxel:usg_flex_500_firmware:*:*:*:*:*:*:*:*", "matchCriteriaId": "C0B8FF81-5020-429E-ABC7-D0F18A5177F5", "versionEndExcluding": "5.36", "versionStartIncluding": "4.50", "vulnerable": true}], "negate": false, "operator": "OR"}, {"cpeMatch": [{"criteria": "cpe:2.3:h:zyxel:usg_flex_500:-:*:*:*:*:*:*:*", "matchCriteriaId": "92C697A5-D1D3-4FF0-9C43-D27B18181958", "vulnerable": false}], "negate": false, "operator": "OR"}], "operator": "AND"}, {"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:zyxel:usg_flex_700_firmware:*:*:*:*:*:*:*:*", "matchCriteriaId": "FD0F817C-6388-41E2-9F80-9B5427036865", "versionEndExcluding": "5.36", "versionStartIncluding": "4.50", "vulnerable": true}], "negate": false, "operator": "OR"}, {"cpeMatch": [{"criteria": "cpe:2.3:h:zyxel:usg_flex_700:-:*:*:*:*:*:*:*", "matchCriteriaId": "9D1396E3-731B-4D05-A3F8-F3ABB80D5C29", "vulnerable": false}], "negate": false, "operator": "OR"}], "operator": "AND"}, {"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:zyxel:usg_flex_100w_firmware:*:*:*:*:*:*:*:*", "matchCriteriaId": "7D65F0EC-7ACA-4B80-8D4E-2C1459837D15", "versionEndExcluding": "5.36", "versionStartIncluding": "4.50", "vulnerable": true}], "negate": false, "operator": "OR"}, {"cpeMatch": [{"criteria": "cpe:2.3:h:zyxel:usg_flex_100w:-:*:*:*:*:*:*:*", "matchCriteriaId": "D74ABA7E-AA78-4A13-A64E-C44021591B42", "vulnerable": false}], "negate": false, "operator": "OR"}], "operator": "AND"}, {"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:zyxel:usg_20w-vpn_firmware:*:*:*:*:*:*:*:*", "matchCriteriaId": "224300FB-2462-4E88-A41E-E9E8EAE9CF48", "versionEndExcluding": "5.36", "versionStartIncluding": "4.16", "vulnerable": true}], "negate": false, "operator": "OR"}, {"cpeMatch": [{"criteria": "cpe:2.3:h:zyxel:usg_20w-vpn:-:*:*:*:*:*:*:*", "matchCriteriaId": "6BEA412F-3DA1-4E91-9C74-0666147DABCE", "vulnerable": false}], "negate": false, "operator": "OR"}], "operator": "AND"}, {"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:zyxel:usg_flex_50w_firmware:*:*:*:*:*:*:*:*", "matchCriteriaId": "F61480ED-BBF0-49EC-A814-CEFDE1FBFA08", "versionEndExcluding": "5.36", "versionStartIncluding": "4.16", "vulnerable": true}], "negate": false, "operator": "OR"}, {"cpeMatch": [{"criteria": "cpe:2.3:h:zyxel:usg_flex_50w:-:*:*:*:*:*:*:*", "matchCriteriaId": "110A1CA4-0170-4834-8281-0A3E14FC5584", "vulnerable": false}], "negate": false, "operator": "OR"}], "operator": "AND"}, {"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:zyxel:usg20-vpn_firmware:*:*:*:*:*:*:*:*", "matchCriteriaId": "7079103C-ED92-40C3-AF42-4689822A96E2", "versionEndExcluding": "5.36", "versionStartIncluding": "4.30", "vulnerable": true}], "negate": false, "operator": "OR"}, {"cpeMatch": [{"criteria": "cpe:2.3:h:zyxel:usg20-vpn:-:*:*:*:*:*:*:*", "matchCriteriaId": "7239C54F-EC9E-44B4-AE33-1D36E5448219", "vulnerable": false}], "negate": false, "operator": "OR"}], "operator": "AND"}, {"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:zyxel:vpn100_firmware:*:*:*:*:*:*:*:*", "matchCriteriaId": "FB329984-D2A1-40B4-826D-78643B8DD4C8", "versionEndExcluding": "5.36", "versionStartIncluding": "4.30", "vulnerable": true}], "negate": false, "operator": "OR"}, {"cpeMatch": [{"criteria": "cpe:2.3:h:zyxel:vpn100:-:*:*:*:*:*:*:*", "matchCriteriaId": "81D90A7B-174F-40A1-8AF4-08B15B7BAC40", "vulnerable": false}], "negate": false, "operator": "OR"}], "operator": "AND"}, {"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:zyxel:vpn1000_firmware:*:*:*:*:*:*:*:*", "matchCriteriaId": "5DB62871-BC40-43D8-A486-471CD9316332", "versionEndExcluding": "5.36", "versionStartIncluding": "4.30", "vulnerable": true}], "negate": false, "operator": "OR"}, {"cpeMatch": [{"criteria": "cpe:2.3:h:zyxel:vpn1000:-:*:*:*:*:*:*:*", "matchCriteriaId": "EECD311A-4E96-4576-AADF-47291EDE3559", "vulnerable": false}], "negate": false, "operator": "OR"}], "operator": "AND"}, {"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:zyxel:vpn300_firmware:*:*:*:*:*:*:*:*", "matchCriteriaId": "D0135FFF-62FA-4AEA-8B67-1CCA2D85D8E0", "versionEndExcluding": "5.36", "versionStartIncluding": "4.30", "vulnerable": true}], "negate": false, "operator": "OR"}, {"cpeMatch": [{"criteria": "cpe:2.3:h:zyxel:vpn300:-:*:*:*:*:*:*:*", "matchCriteriaId": "3C45C303-1A95-4245-B242-3AB9B9106CD4", "vulnerable": false}], "negate": false, "operator": "OR"}], "operator": "AND"}, {"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:zyxel:vpn50_firmware:*:*:*:*:*:*:*:*", "matchCriteriaId": "B01FA34A-CA33-48E7-978C-638FC678C9C1", "versionEndExcluding": "5.36", "versionStartIncluding": "4.30", "vulnerable": true}], "negate": false, "operator": "OR"}, {"cpeMatch": [{"criteria": "cpe:2.3:h:zyxel:vpn50:-:*:*:*:*:*:*:*", "matchCriteriaId": "9E3AC823-0ECA-42D8-8312-2FBE5914E4C0", "vulnerable": false}], "negate": false, "operator": "OR"}], "operator": "AND"}], "descriptions": [{"lang": "en", "value": "The post-authentication command injection vulnerability in the CLI command of Zyxel ATP series firmware versions 4.32 through 5.35, USG FLEX series firmware versions 4.50 through 5.35, USG FLEX 50(W) firmware versions 4.16 through 5.35, USG20(W)-VPN firmware versions 4.16 through 5.35, and VPN series firmware versions 4.30 through 5.35, which could allow an authenticated attacker to execute some OS commands remotely."}], "id": "CVE-2023-27991", "lastModified": "2024-11-21T07:53:53.360", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 8.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 5.9, "source": "security@zyxel.com.tw", "type": "Secondary"}, {"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 8.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 5.9, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2023-04-24T18:15:09.497", "references": [{"source": "security@zyxel.com.tw", "tags": ["Vendor Advisory"], "url": "https://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for-xss-vulnerability-and-post-authentication-command-injection-vulnerability-in-firewalls"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Vendor Advisory"], "url": "https://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for-xss-vulnerability-and-post-authentication-command-injection-vulnerability-in-firewalls"}], "sourceIdentifier": "security@zyxel.com.tw", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-78"}], "source": "security@zyxel.com.tw", "type": "Secondary"}, {"description": [{"lang": "en", "value": "CWE-78"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{}

{}