Missing authorization in the JSON-RPC web services interface\nof Extreme Networks Switch Engine (EXOS) allows an authenticated,\nlow-privileged (read-only) user to execute CLI show commands that are\nrestricted to that role through the command line interface. Successful\nexploitation results in disclosure of sensitive information, including the\ndevice configuration and the password hashes of local accounts. Configuration,\nenable, and debug commands are not affected. Disclosed password hashes can be\nattacked offline, and a weak password could lead to administrative access to\nthe device. This issue is fixed in Switch Engine 33.7.1-patch1-11,\n33.1.100.133-patch1-9, and 32.7.4.15-patch1-11.
Extreme Networks would like to thank Toàn Lê (GitHub: https://github.com/toanln-cov) for responsibly disclosing this vulnerability and for working with our PSIRT team through coordinated disclosure.
"}],"value":"Missing authorization in the JSON-RPC web services interface\nof Extreme Networks Switch Engine (EXOS) allows an authenticated,\nlow-privileged (read-only) user to execute CLI show commands that are\nrestricted to that role through the command line interface. Successful\nexploitation results in disclosure of sensitive information, including the\ndevice configuration and the password hashes of local accounts. Configuration,\nenable, and debug commands are not affected. Disclosed password hashes can be\nattacked offline, and a weak password could lead to administrative access to\nthe device. This issue is fixed in Switch Engine 33.7.1-patch1-11,\n33.1.100.133-patch1-9, and 32.7.4.15-patch1-11.\n\n\n\n\n\n\n\n\nExtreme Networks would like to thank Toàn Lê (GitHub: https://github.com/toanln-cov) for responsibly disclosing this vulnerability and for working with our PSIRT team through coordinated disclosure."}],"impacts":[{"capecId":"CAPEC-1","descriptions":[{"lang":"en","value":"CAPEC-1 Accessing Functionality Not Properly Constrained by ACLs"}]}],"metrics":[{"cvssV4_0":{"Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","Safety":"NOT_DEFINED","attackComplexity":"LOW","attackRequirements":"NONE","attackVector":"NETWORK","baseScore":8.3,"baseSeverity":"HIGH","exploitMaturity":"NOT_DEFINED","privilegesRequired":"LOW","providerUrgency":"NOT_DEFINED","subAvailabilityImpact":"NONE","subConfidentialityImpact":"HIGH","subIntegrityImpact":"NONE","userInteraction":"NONE","valueDensity":"NOT_DEFINED","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:H/SI:N/SA:N","version":"4.0","vulnAvailabilityImpact":"NONE","vulnConfidentialityImpact":"HIGH","vulnIntegrityImpact":"NONE","vulnerabilityResponseEffort":"NOT_DEFINED"},"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}]},{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":6.5,"baseSeverity":"MEDIUM","confidentialityImpact":"HIGH","integrityImpact":"NONE","privilegesRequired":"LOW","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N","version":"3.1"},"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}]}],"problemTypes":[{"descriptions":[{"cweId":"CWE-862","description":"CWE-862 Missing Authorization","lang":"en","type":"CWE"}]}],"providerMetadata":{"dateUpdated":"2026-11-11T15:30:14.813Z","orgId":"1c053176-eef3-4d6a-ae0b-24728c86587b","shortName":"ExtremeNetworks"},"references":[{"url":"https://extreme-networks.my.site.com/ExtrArticleDetail?an=000140004"}],"solutions":[{"lang":"en","supportingMedia":[{"base64":false,"type":"text/html","value":"Upgrade\nto Switch Engine 33.7.1-patch1-11, 33.1.100.133-patch1-9, or\n32.7.4.15-patch1-11, or later.Restrict access to the device management interface to\ntrusted networks and hosts. Disable the web services (JSON-RPC) interface where\nit is not required. Limit read-only accounts to users who require them, and\nenforce strong, unique passwords on all local accounts.
"}],"value":"Restrict access to the device management interface to\ntrusted networks and hosts. Disable the web services (JSON-RPC) interface where\nit is not required. Limit read-only accounts to users who require them, and\nenforce strong, unique passwords on all local accounts."}],"x_generator":{"engine":"Vulnogram 1.0.5"}}},"cveMetadata":{"assignerOrgId":"1c053176-eef3-4d6a-ae0b-24728c86587b","assignerShortName":"ExtremeNetworks","cveId":"CVE-2026-105440","datePublished":"2026-11-11T15:23:47.991Z","dateReserved":"2026-10-05T13:12:24.896Z","dateUpdated":"2026-11-11T15:30:14.813Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-11-11 16:17:24","lastModifiedDate":"2026-11-11 16:17:24","problem_types":["CWE-862","CWE-862 CWE-862 Missing Authorization"],"metrics":{"cvssMetricV40":[{"source":"1c053176-eef3-4d6a-ae0b-24728c86587b","type":"Secondary","cvssData":{"version":"4.0","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:H/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","baseScore":8.3,"baseSeverity":"HIGH","attackVector":"NETWORK","attackComplexity":"LOW","attackRequirements":"NONE","privilegesRequired":"LOW","userInteraction":"NONE","vulnConfidentialityImpact":"HIGH","vulnIntegrityImpact":"NONE","vulnAvailabilityImpact":"NONE","subConfidentialityImpact":"HIGH","subIntegrityImpact":"NONE","subAvailabilityImpact":"NONE","exploitMaturity":"NOT_DEFINED","confidentialityRequirement":"NOT_DEFINED","integrityRequirement":"NOT_DEFINED","availabilityRequirement":"NOT_DEFINED","modifiedAttackVector":"NOT_DEFINED","modifiedAttackComplexity":"NOT_DEFINED","modifiedAttackRequirements":"NOT_DEFINED","modifiedPrivilegesRequired":"NOT_DEFINED","modifiedUserInteraction":"NOT_DEFINED","modifiedVulnConfidentialityImpact":"NOT_DEFINED","modifiedVulnIntegrityImpact":"NOT_DEFINED","modifiedVulnAvailabilityImpact":"NOT_DEFINED","modifiedSubConfidentialityImpact":"NOT_DEFINED","modifiedSubIntegrityImpact":"NOT_DEFINED","modifiedSubAvailabilityImpact":"NOT_DEFINED","Safety":"NOT_DEFINED","Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","valueDensity":"NOT_DEFINED","vulnerabilityResponseEffort":"NOT_DEFINED","providerUrgency":"NOT_DEFINED"}}],"cvssMetricV31":[{"source":"1c053176-eef3-4d6a-ae0b-24728c86587b","type":"Secondary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N","baseScore":6.5,"baseSeverity":"MEDIUM","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"NONE","availabilityImpact":"NONE"},"exploitabilityScore":2.8,"impactScore":3.6}]},"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"105440","Ordinal":"1","Title":"Switch Engine (EXOS) JSON-RPC Authorization Bypass Allows Read-O","CVE":"CVE-2026-105440","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"105440","Ordinal":"1","NoteData":"Missing authorization in the JSON-RPC web services interface\nof Extreme Networks Switch Engine (EXOS) allows an authenticated,\nlow-privileged (read-only) user to execute CLI show commands that are\nrestricted to that role through the command line interface. Successful\nexploitation results in disclosure of sensitive information, including the\ndevice configuration and the password hashes of local accounts. Configuration,\nenable, and debug commands are not affected. Disclosed password hashes can be\nattacked offline, and a weak password could lead to administrative access to\nthe device. This issue is fixed in Switch Engine 33.7.1-patch1-11,\n33.1.100.133-patch1-9, and 32.7.4.15-patch1-11.\n\n\n\n\n\n\n\n\nExtreme Networks would like to thank Toàn Lê (GitHub: https://github.com/toanln-cov) for responsibly disclosing this vulnerability and for working with our PSIRT team through coordinated disclosure.","Type":"Description","Title":"Switch Engine (EXOS) JSON-RPC Authorization Bypass Allows Read-O"}]}}}