CVE-2026-33779 (GCVE-0-2026-33779)

Vulnerability from cvelistv5 – Published: 2026-04-09 21:30 – Updated: 2026-04-13 18:06
VLAI
Title
Junos OS: SRX Series: Insufficient certificate verification for device to SD cloud communication
Summary
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. 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. This issue affects Junos OS: * all versions before 22.4R3-S9, * 23.2 versions before 23.2R2-S6, * 23.4 versions before 23.4R2-S7, * 24.2 versions before 24.2R2-S3, * 24.4 versions before 24.4R2-S2, * 25.2 versions before 25.2R1-S2, 25.2R2.
Severity
6.5 (Medium)
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:N
8.3 (High)
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
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-04-13 17:40 UTC
CWE
  • CWE-296 - Improper Following of a Certificate's Chain of Trust
Assigner
juniper CNA under the mitre root
CNA scorecard B 84/100 over 193 records in the last 180 days details
References
URL Tags
https://kb.juniper.net/JSA107823 vendor-advisory
Impacted products
Vendor Product Version CPE status
Juniper Networks Junos OS Affected: 0 , < 22.4R3-S9 (semver)
Affected: 23.2 , < 23.2R2-S6 (semver)
Affected: 23.4 , < 23.4R2-S7 (semver)
Affected: 24.2 , < 24.2R2-S3 (semver)
Affected: 24.4 , < 24.4R2-S2 (semver)
Affected: 25.2 , < 25.2R1-S2, 25.2R2 (semver)
guessed Create a notification for this product.
Date Public
2026-04-08 16:00
Credits
Juniper SIRT would like to acknowledge and thank Konrad Porzezynski for responsibly reporting this vulnerability.
Show details on NVD website
To clipboard 

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          "source": {
            "advisory": "JSA107823",
            "defect": [
              "1877553"
            ],
            "discovery": "EXTERNAL"
          },
          "title": "Junos OS: SRX Series: Insufficient certificate verification for device to SD cloud communication",
          "workarounds": [
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      "cveMetadata": {
        "assignerOrgId": "8cbe9d5a-a066-4c94-8978-4b15efeae968",
        "assignerShortName": "juniper",
        "cveId": "CVE-2026-33779",
        "datePublished": "2026-04-09T21:30:56.635Z",
        "dateReserved": "2026-03-23T19:46:13.669Z",
        "dateUpdated": "2026-04-13T18:06:19.571Z",
        "state": "PUBLISHED"
      },
      "dataType": "CVE_RECORD",
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    }
  }
}



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Sightings

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
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