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CVE-2026-102177 Junos OS and Junos OS Evolved: An out-of-bounds write causes an rpd crash when IS-IS backup selection is used

🗓️ 14 Oct 2026 16:56:54Reported by juniperType 
cvelist
 cvelist
🔗 www.cve.org👁 31 Views

Out-of-bounds write in Junos OS and Junos OS Evolved rpd causes DoS during IS-IS backup selection.

Related
Affected
Refs
ReporterTitlePublishedViews
Family
circl
Circl
CVE-2026-102177
14 Oct 202622:40
–circl
cve
CVE
CVE-2026-102177
14 Oct 202616:56
–cve
euvd
EUVD
EUVD-2026-101393
14 Oct 202616:56
–euvd
nvd
NVD
CVE-2026-102177
14 Oct 202617:18
–nvd
ptsecurity
Positive Technologies
PT-2026-113927
14 Oct 202600:00
–ptsecurity
[
  {
    "defaultStatus": "unaffected",
    "product": "Junos OS",
    "vendor": "Juniper Networks",
    "versions": [
      {
        "lessThan": "23.2R2-S7.7",
        "status": "affected",
        "version": "0",
        "versionType": "custom"
      },
      {
        "lessThan": "23.4R2-S8.13",
        "status": "affected",
        "version": "23.4",
        "versionType": "custom"
      },
      {
        "lessThan": "24.2R2-S5.5",
        "status": "affected",
        "version": "24.2",
        "versionType": "custom"
      },
      {
        "lessThan": "24.4R2-S5",
        "status": "affected",
        "version": "24.4",
        "versionType": "custom"
      },
      {
        "lessThan": "25.2R2-S2",
        "status": "affected",
        "version": "25.2",
        "versionType": "custom"
      },
      {
        "lessThan": "25.4R1-S3",
        "status": "affected",
        "version": "25.4",
        "versionType": "custom"
      },
      {
        "lessThan": "26.2R1-S2",
        "status": "affected",
        "version": "26.2",
        "versionType": "custom"
      }
    ]
  },
  {
    "defaultStatus": "unaffected",
    "product": "Junos OS Evolved",
    "vendor": "Juniper Networks",
    "versions": [
      {
        "lessThan": "23.2R2-S7.7-EVO",
        "status": "affected",
        "version": "0",
        "versionType": "custom"
      },
      {
        "lessThan": "23.4R2-S8.11-EVO",
        "status": "affected",
        "version": "23.4",
        "versionType": "custom"
      },
      {
        "lessThan": "24.2R2-S5.6-EVO",
        "status": "affected",
        "version": "24.2",
        "versionType": "custom"
      },
      {
        "lessThan": "24.4R2-S5-EVO",
        "status": "affected",
        "version": "24.4",
        "versionType": "custom"
      },
      {
        "lessThan": "25.2R2-S2-EVO",
        "status": "affected",
        "version": "25.2",
        "versionType": "custom"
      },
      {
        "lessThan": "25.4R1-S3-EVO",
        "status": "affected",
        "version": "25.4",
        "versionType": "custom"
      },
      {
        "lessThan": "26.2R1-S2-EVO",
        "status": "affected",
        "version": "26.2",
        "versionType": "custom"
      },
      {
        "status": "affected",
        "version": "23.4X100",
        "versionType": "custom"
      },
      {
        "lessThan": "25.2X100-D35-EVO",
        "status": "affected",
        "version": "25.2X100",
        "versionType": "custom"
      },
      {
        "lessThan": "25.4X300-D40-EVO",
        "status": "affected",
        "version": "25.4X300",
        "versionType": "custom"
      }
    ]
  }
]

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14 Oct 2026 16:56Current
CVSS 47.2
CVSS 3.17.6
EPSS0.0027
SSVC
31