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CVE-2026-21901 Junos OS and Junos OS Evolved: Configuration of a specific SSH option results in mgd crash

🗓️ 09 Jul 2026 21:01:31Reported by juniperType 
cvelist
 cvelist
🔗 www.cve.org👁 29 Views

Null pointer dereference in mgd during SSH config crashes Junos OS and Junos OS Evolved DoS.

Related
Affected
Refs
ReporterTitlePublishedViews
Family
ATTACKERKB
CVE-2026-21901
9 Jul 202621:01
attackerkb
Circl
CVE-2026-21901
9 Jul 202604:46
circl
CVE
CVE-2026-21901
9 Jul 202621:01
cve
EUVD
EUVD-2026-42697
9 Jul 202621:01
euvd
NVD
CVE-2026-21901
9 Jul 202621:16
nvd
Positive Technologies
PT-2026-56924
9 Jul 202600:00
ptsecurity
Vulnrichment
CVE-2026-21901 Junos OS and Junos OS Evolved: Configuration of a specific SSH option results in mgd crash
9 Jul 202621:01
vulnrichment
[
  {
    "defaultStatus": "unaffected",
    "product": "Junos OS",
    "vendor": "Juniper Networks",
    "versions": [
      {
        "lessThan": "22.3R3-S5",
        "status": "affected",
        "version": "22.3",
        "versionType": "custom"
      },
      {
        "lessThan": "22.4R3-S10",
        "status": "affected",
        "version": "22.4",
        "versionType": "custom"
      },
      {
        "lessThan": "23.2R2-S7",
        "status": "affected",
        "version": "23.2",
        "versionType": "custom"
      },
      {
        "lessThan": "23.4R2-S8",
        "status": "affected",
        "version": "23.4",
        "versionType": "custom"
      },
      {
        "lessThan": "22.3R1",
        "status": "unaffected",
        "version": "0",
        "versionType": "custom"
      }
    ]
  },
  {
    "defaultStatus": "unaffected",
    "product": "Junos OS Evolved",
    "vendor": "Juniper Networks",
    "versions": [
      {
        "lessThan": "23.2R2-S7-EVO",
        "status": "affected",
        "version": "23.2",
        "versionType": "custom"
      },
      {
        "lessThan": "23.4R2-S8-EVO",
        "status": "affected",
        "version": "23.4",
        "versionType": "custom"
      },
      {
        "lessThan": "22.3R1-EVO",
        "status": "unaffected",
        "version": "0",
        "versionType": "custom"
      }
    ]
  }
]

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