{"id":"CVE-2026-33779","state":"PUBLISHED","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.","publishedAt":"2026-04-09T21:30:56.635Z","updatedAt":"2026-04-13T18:06:19.571Z","severity":{"score":8.3,"label":"High","version":"4.0","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","source":"juniper"},"assigner":"juniper","products":["Juniper Networks Junos OS"],"affected":[{"vendor":"Juniper Networks","product":"Junos OS","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThan":"22.4R3-S9","versionType":"semver"},{"version":"23.2","status":"affected","lessThan":"23.2R2-S6","versionType":"semver"},{"version":"23.4","status":"affected","lessThan":"23.4R2-S7","versionType":"semver"},{"version":"24.2","status":"affected","lessThan":"24.2R2-S3","versionType":"semver"},{"version":"24.4","status":"affected","lessThan":"24.4R2-S2","versionType":"semver"},{"version":"25.2","status":"affected","lessThan":"25.2R1-S2, 25.2R2","versionType":"semver"}],"platforms":["SRX Series"]}],"references":["https://kb.juniper.net/JSA107823"],"weaknesses":["CWE-296"],"ingestedAt":"2026-10-29T20:11:40.391Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/33xxx/CVE-2026-33779.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-33779","state":"PUBLISHED","datePublished":"2026-04-09T21:30:56.635Z","dateUpdated":"2026-04-13T18:06:19.571Z","assignerShortName":"juniper","assignerOrgId":"8cbe9d5a-a066-4c94-8978-4b15efeae968","dateReserved":"2026-03-23T19:46:13.669Z"},"containers":{"cna":{"title":"Junos OS: SRX Series: Insufficient certificate verification for device to SD cloud communication","descriptions":[{"lang":"en","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."}],"affected":[{"vendor":"Juniper Networks","product":"Junos OS","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThan":"22.4R3-S9","versionType":"semver"},{"version":"23.2","status":"affected","lessThan":"23.2R2-S6","versionType":"semver"},{"version":"23.4","status":"affected","lessThan":"23.4R2-S7","versionType":"semver"},{"version":"24.2","status":"affected","lessThan":"24.2R2-S3","versionType":"semver"},{"version":"24.4","status":"affected","lessThan":"24.4R2-S2","versionType":"semver"},{"version":"25.2","status":"affected","lessThan":"25.2R1-S2, 25.2R2","versionType":"semver"}],"platforms":["SRX Series"]}],"references":[{"url":"https://kb.juniper.net/JSA107823","tags":["vendor-advisory"]}],"metrics":[{"cvssV3_1":{"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"},"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}]},{"cvssV4_0":{"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"},"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}]}],"problemTypes":[{"descriptions":[{"cweId":"CWE-296","description":"CWE-296 Improper Following of a Certificate's Chain of Trust","lang":"en","type":"CWE"}]}],"providerMetadata":{"shortName":"juniper","orgId":"8cbe9d5a-a066-4c94-8978-4b15efeae968","dateUpdated":"2026-04-09T21:30:56.635Z"},"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","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 vulnerability."}],"solutions":[{"lang":"en","supportingMedia":[{"base64":false,"type":"text/html","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."}],"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."}],"source":{"advisory":"JSA107823","defect":["1877553"],"discovery":"EXTERNAL"},"workarounds":[{"lang":"en","supportingMedia":[{"base64":false,"type":"text/html","value":"There are no known workarounds for this issue."}],"value":"There are no known workarounds for this issue."}],"x_generator":{"engine":"Vulnogram 0.1.0-dev"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"id":"CVE-2026-33779","role":"CISA Coordinator","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"version":"2.0.3","timestamp":"2026-04-13T17:40:14.109893Z"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-04-13T18:06:19.571Z"}}]}}}