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CVE-2026-21919

🗓️ 09 Apr 2026 21:26:46Reported by juniperType 
cve
 cve
🔗 web.nvd.nist.gov👁 12 Views

mgd synchronization flaw causes denial of service from rapid NETCONF sessions on Junos OS and Junos OS Evolved.

Related
Detection
Affected
Refs
NVD
Vulners
Node
juniperjunosMatch23.4-
OR
juniperjunosMatch23.4r1
OR
juniperjunosMatch23.4r1-s1
OR
juniperjunosMatch23.4r1-s2
OR
juniperjunosMatch23.4r2
OR
juniperjunosMatch23.4r2-s1
OR
juniperjunosMatch23.4r2-s2
OR
juniperjunosMatch23.4r2-s3
OR
juniperjunosMatch24.2-
OR
juniperjunosMatch24.2r1
OR
juniperjunosMatch24.2r1-s1
OR
juniperjunosMatch24.2r1-s2
OR
juniperjunosMatch24.2r2
OR
juniperjunosMatch24.4-
OR
juniperjunosMatch24.4r1
OR
juniperjunosMatch24.4r1-s2
OR
juniperjunosMatch24.4r2
[
  {
    "defaultStatus": "unaffected",
    "product": "Junos OS",
    "vendor": "Juniper Networks",
    "versions": [
      {
        "lessThan": "23.4R2-S4",
        "status": "affected",
        "version": "23.4",
        "versionType": "semver"
      },
      {
        "lessThan": "24.2R2-S1",
        "status": "affected",
        "version": "24.2",
        "versionType": "semver"
      },
      {
        "lessThan": "24.4R1-S3, 24.4R2",
        "status": "affected",
        "version": "24.4",
        "versionType": "semver"
      },
      {
        "lessThan": "23.4R1",
        "status": "unaffected",
        "version": "all version prior to",
        "versionType": "semver"
      }
    ]
  },
  {
    "defaultStatus": "unaffected",
    "product": "Junos OS Evolved",
    "vendor": "Juniper Networks",
    "versions": [
      {
        "lessThan": "23.4R2-S5-EVO",
        "status": "affected",
        "version": "23.4",
        "versionType": "semver"
      },
      {
        "lessThan": "24.2R2-S1-EVO",
        "status": "affected",
        "version": "24.2",
        "versionType": "semver"
      },
      {
        "lessThan": "24.4R1-S3-EVO, 24.4R2-EVO",
        "status": "affected",
        "version": "24.4",
        "versionType": "semver"
      },
      {
        "lessThan": "23.4R1-EVO",
        "status": "unaffected",
        "version": "all version prior to",
        "versionType": "semver"
      }
    ]
  }
]

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17 Jun 2026 10:19Current
5.8Medium risk
Vulners AI Score5.8
CVSS 3.16.5
CVSS 47.1
EPSS0.00229
SSVC
12