{"api_version":"1","generated_at":"2026-04-19T08:31:28+00:00","cve":"CVE-2026-33779","urls":{"html":"https://cve.report/CVE-2026-33779","api":"https://cve.report/api/cve/CVE-2026-33779.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-33779","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-33779"},"summary":{"title":"Junos OS: SRX Series: Insufficient certificate verification for device to SD cloud communication","description":"An Improper Following of a Certificate's Chain of Trust vulnerability in J-Web of Juniper Networks Junos OS on SRX Series allows a PITM to intercept the communication of the device and get access to confidential information and potentially modify it.\n\nWhen an SRX device is provisioned to connect to Security Director (SD) cloud, it doesn't perform sufficient verification of the received server certificate. This allows a PITM to intercept the communication between the SRX and SD cloud and access credentials and other sensitive information.\n\nThis issue affects Junos OS:\n  *  all versions before 22.4R3-S9,\n  *  23.2 versions before 23.2R2-S6,\n  *  23.4 versions before 23.4R2-S7,\n  *  24.2 versions before 24.2R2-S3,\n  *  24.4 versions before 24.4R2-S2,\n  *  25.2 versions before 25.2R1-S2, 25.2R2.","state":"PUBLISHED","assigner":"juniper","published_at":"2026-04-09 22:16:26","updated_at":"2026-04-17 17:21:52"},"problem_types":["CWE-296","CWE-296 CWE-296 Improper Following of a Certificate's Chain of Trust"],"metrics":[{"version":"4.0","source":"sirt@juniper.net","type":"Secondary","score":"8.3","severity":"HIGH","vector":"CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:L/VA:N/SC:N/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:M/U:X","data":{"version":"4.0","vectorString":"CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:L/VA:N/SC:N/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:M/U:X","baseScore":8.3,"baseSeverity":"HIGH","attackVector":"NETWORK","attackComplexity":"HIGH","attackRequirements":"NONE","privilegesRequired":"NONE","userInteraction":"NONE","vulnConfidentialityImpact":"HIGH","vulnIntegrityImpact":"LOW","vulnAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","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":"MODERATE","providerUrgency":"NOT_DEFINED"}},{"version":"4.0","source":"CNA","type":"CVSS","score":"8.3","severity":"HIGH","vector":"CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N/RE:M","data":{"Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","Safety":"NOT_DEFINED","attackComplexity":"HIGH","attackRequirements":"NONE","attackVector":"NETWORK","baseScore":8.3,"baseSeverity":"HIGH","privilegesRequired":"NONE","providerUrgency":"NOT_DEFINED","subAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","userInteraction":"NONE","valueDensity":"NOT_DEFINED","vectorString":"CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N/RE:M","version":"4.0","vulnAvailabilityImpact":"NONE","vulnConfidentialityImpact":"HIGH","vulnIntegrityImpact":"LOW","vulnerabilityResponseEffort":"MODERATE"}},{"version":"3.1","source":"sirt@juniper.net","type":"Primary","score":"6.5","severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:N","data":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:N","baseScore":6.5,"baseSeverity":"MEDIUM","attackVector":"NETWORK","attackComplexity":"HIGH","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"LOW","availabilityImpact":"NONE"}},{"version":"3.1","source":"CNA","type":"CVSS","score":"6.5","severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:N","data":{"attackComplexity":"HIGH","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":6.5,"baseSeverity":"MEDIUM","confidentialityImpact":"HIGH","integrityImpact":"LOW","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:N","version":"3.1"}}],"references":[{"url":"https://kb.juniper.net/JSA107823","name":"https://kb.juniper.net/JSA107823","refsource":"sirt@juniper.net","tags":["Vendor Advisory"],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-33779","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-33779","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Juniper Networks","product":"Junos OS","version":"affected 22.4R3-S9 semver","platforms":["SRX Series"]},{"source":"CNA","vendor":"Juniper Networks","product":"Junos OS","version":"affected 23.2 23.2R2-S6 semver","platforms":["SRX Series"]},{"source":"CNA","vendor":"Juniper Networks","product":"Junos OS","version":"affected 23.4 23.4R2-S7 semver","platforms":["SRX Series"]},{"source":"CNA","vendor":"Juniper Networks","product":"Junos OS","version":"affected 24.2 24.2R2-S3 semver","platforms":["SRX Series"]},{"source":"CNA","vendor":"Juniper Networks","product":"Junos OS","version":"affected 24.4 24.4R2-S2 semver","platforms":["SRX Series"]},{"source":"CNA","vendor":"Juniper Networks","product":"Junos OS","version":"affected 25.2 25.2R1-S2, 25.2R2 semver","platforms":["SRX Series"]}],"timeline":[],"solutions":[{"source":"CNA","title":"","value":"The following software releases have been updated to resolve this specific issue: 22.4R3-S9, 23.2R2-S6, 23.4R2-S7, 24.2R2-S3, 24.4R2-S2, 25.2R1-S2, 25.2R2, 25.4R1, and all subsequent releases.","time":"","lang":"en"}],"workarounds":[{"source":"CNA","title":"","value":"There are no known workarounds for this issue.","time":"","lang":"en"}],"exploits":[{"source":"CNA","title":"","value":"Juniper SIRT is not aware of any malicious exploitation of this vulnerability.","time":"","lang":"en"}],"credits":[{"source":"CNA","value":"Juniper SIRT would like to acknowledge and thank Konrad Porzezynski for responsibly reporting this 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Networks","versions":[{"lessThan":"22.4R3-S9","status":"affected","version":"0","versionType":"semver"},{"lessThan":"23.2R2-S6","status":"affected","version":"23.2","versionType":"semver"},{"lessThan":"23.4R2-S7","status":"affected","version":"23.4","versionType":"semver"},{"lessThan":"24.2R2-S3","status":"affected","version":"24.2","versionType":"semver"},{"lessThan":"24.4R2-S2","status":"affected","version":"24.4","versionType":"semver"},{"lessThan":"25.2R1-S2, 25.2R2","status":"affected","version":"25.2","versionType":"semver"}]}],"credits":[{"lang":"en","type":"finder","value":"Juniper SIRT would like to acknowledge and thank Konrad Porzezynski for responsibly reporting this vulnerability."}],"datePublic":"2026-04-08T16:00:00.000Z","descriptions":[{"lang":"en","supportingMedia":[{"base64":false,"type":"text/html","value":"An Improper Following of a Certificate's Chain of Trust vulnerability in J-Web of Juniper Networks Junos OS on SRX Series allows a PITM to intercept the communication of the device and get access to confidential information and potentially modify it.<br><br>When an SRX device is provisioned to connect to Security Director (SD) cloud, it doesn't perform sufficient verification of the received server certificate. This allows a PITM to intercept the communication between the SRX and SD cloud and access credentials and other sensitive information.<br><br>This issue affects Junos OS:<br><ul><li>all versions before 22.4R3-S9,</li><li>23.2 versions before 23.2R2-S6,</li><li>23.4 versions before 23.4R2-S7,</li><li>24.2 versions before 24.2R2-S3,</li><li>24.4 versions before 24.4R2-S2,</li><li>25.2 versions before 25.2R1-S2, 25.2R2.</li></ul><br>"}],"value":"An Improper Following of a Certificate's Chain of Trust vulnerability in J-Web of Juniper Networks Junos OS on SRX Series allows a PITM to intercept the communication of the device and get access to confidential information and potentially modify it.\n\nWhen an SRX device is provisioned to connect to Security Director (SD) cloud, it doesn't perform sufficient verification of the received server certificate. This allows a PITM to intercept the communication between the SRX and SD cloud and access credentials and other sensitive information.\n\nThis issue affects Junos OS:\n  *  all versions before 22.4R3-S9,\n  *  23.2 versions before 23.2R2-S6,\n  *  23.4 versions before 23.4R2-S7,\n  *  24.2 versions before 24.2R2-S3,\n  *  24.4 versions before 24.4R2-S2,\n  *  25.2 versions before 25.2R1-S2, 25.2R2."}],"exploits":[{"lang":"en","supportingMedia":[{"base64":false,"type":"text/html","value":"Juniper SIRT is not aware of any malicious exploitation of this vulnerability."}],"value":"Juniper SIRT is not aware of any malicious exploitation of this 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OS: SRX Series: Insufficient certificate verification for ","CVE":"CVE-2026-33779","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"33779","Ordinal":"1","NoteData":"An Improper Following of a Certificate's Chain of Trust vulnerability in J-Web of Juniper Networks Junos OS on SRX Series allows a PITM to intercept the communication of the device and get access to confidential information and potentially modify it.\n\nWhen an SRX device is provisioned to connect to Security Director (SD) cloud, it doesn't perform sufficient verification of the received server certificate. This allows a PITM to intercept the communication between the SRX and SD cloud and access credentials and other sensitive information.\n\nThis issue affects Junos OS:\n  *  all versions before 22.4R3-S9,\n  *  23.2 versions before 23.2R2-S6,\n  *  23.4 versions before 23.4R2-S7,\n  *  24.2 versions before 24.2R2-S3,\n  *  24.4 versions before 24.4R2-S2,\n  *  25.2 versions before 25.2R1-S2, 25.2R2.","Type":"Description","Title":"Junos OS: SRX Series: Insufficient certificate verification for "}]}}}