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CVE-2026-57019 Junos OS: MX Series: Specific traffic causes an FPC to reset

🗓️ 09 Jul 2026 21:04:41Reported by juniperType 
cvelist
 cvelist
🔗 www.cve.org👁 3 Views

Improper packet size validation in Junos MX pfe causes a denial of service via specific MAP-T or IP-encapsulated traffic, triggering a major error and FPC reset.

Related
Affected
Refs
ReporterTitlePublishedViews
Family
ATTACKERKB
CVE-2026-57019
9 Jul 202621:04
attackerkb
Circl
CVE-2026-57019
9 Jul 202604:47
circl
CVE
CVE-2026-57019
9 Jul 202621:04
cve
EUVD
EUVD-2026-42706
10 Jul 202600:31
euvd
Tenable Nessus
Juniper Junos OS Vulnerability (JSA110079)
8 Jul 202600:00
nessus
NVD
CVE-2026-57019
9 Jul 202622:17
nvd
Positive Technologies
PT-2026-56973
9 Jul 202600:00
ptsecurity
[
  {
    "defaultStatus": "unaffected",
    "platforms": [
      "MX Series"
    ],
    "product": "Junos OS",
    "vendor": "Juniper Networks",
    "versions": [
      {
        "lessThan": "23.2R2-S6",
        "status": "affected",
        "version": "0",
        "versionType": "custom"
      },
      {
        "lessThan": "23.4R2-S7",
        "status": "affected",
        "version": "23.4",
        "versionType": "custom"
      },
      {
        "lessThan": "24.2R2-S4",
        "status": "affected",
        "version": "24.2",
        "versionType": "custom"
      },
      {
        "lessThan": "24.4R2-S4",
        "status": "affected",
        "version": "24.4",
        "versionType": "custom"
      },
      {
        "lessThan": "25.2R2",
        "status": "affected",
        "version": "25.2",
        "versionType": "custom"
      }
    ]
  }
]

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