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Junos OS and Junos OS Evolved: SRX Series: An attacker causes a forwarding-plane outage when SVR vector routing is used

Type: advisorySource: Official CVE List1 source record

An Integer Underflow (Wrap or Wraparound) vulnerability in the srxpfe of Juniper Networks Junos OS and Junos OS Evolved on the SRX Series allows an adjacent unauthenticated attacker to cause a forwarding-plane denial of service via an ICMP message associated with an SVR carrier session.

Announced Source revision 1
Original source ↗

CVE-2026-101938

Primary source · Revision 1

Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.

Security context

Source reference: cve:CVE-2026-101938

Junos OS

Source reference: /containers/cna/affected/0/product

Affected versions
Not stated in this record
Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

Junos OS Evolved

Source reference: /containers/cna/affected/1/product

Affected versions
Not stated in this record
Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

Structured affected-version data

Original package identities and version rules from this source.

[
  {
    "vendor": "Juniper Networks",
    "product": "Junos OS",
    "versions": [
      {
        "status": "affected",
        "version": "0",
        "lessThan": "23.2R2-S7.7",
        "versionType": "custom"
      },
      {
        "status": "affected",
        "version": "23.4",
        "lessThan": "23.4R2-S8.13",
        "versionType": "custom"
      },
      {
        "status": "affected",
        "version": "24.2",
        "lessThan": "24.2R2-S5.5",
        "versionType": "custom"
      },
      {
        "status": "affected",
        "version": "24.4",
        "lessThan": "24.4R2-S5",
        "versionType": "custom"
      },
      {
        "status": "affected",
        "version": "25.2",
        "lessThan": "25.2R2-S2",
        "versionType": "custom"
      },
      {
        "status": "affected",
        "version": "25.4",
        "lessThan": "25.4R1-S3",
        "versionType": "custom"
      },
      {
        "status": "affected",
        "version": "26.2",
        "lessThan": "26.2R1-S2",
        "versionType": "custom"
      }
    ],
    "platforms": [
      "SRX Series"
    ],
    "defaultStatus": "unaffected"
  },
  {
    "vendor": "Juniper Networks",
    "product": "Junos OS Evolved",
    "versions": [
      {
        "status": "affected",
        "version": "0",
        "lessThan": "23.2R2-S7.7-EVO",
        "versionType": "custom"
      },
      {
        "status": "affected",
        "version": "23.4",
        "lessThan": "23.4R2-S8.11-EVO",
        "versionType": "custom"
      },
      {
        "status": "affected",
        "version": "24.2",
        "lessThan": "24.2R2-S5.6-EVO",
        "versionType": "custom"
      },
      {
        "status": "affected",
        "version": "24.4",
        "lessThan": "24.4R2-S5-EVO",
        "versionType": "custom"
      },
      {
        "status": "affected",
        "version": "25.2",
        "lessThan": "25.2R2-S2-EVO",
        "versionType": "custom"
      },
      {
        "status": "affected",
        "version": "25.4",
        "lessThan": "25.4R1-S3-EVO",
        "versionType": "custom"
      },
      {
        "status": "affected",
        "version": "26.2",
        "lessThan": "26.2R1-S2-EVO",
        "versionType": "custom"
      },
      {
        "status": "affected",
        "version": "23.4X100",
        "versionType": "custom"
      },
      {
        "status": "affected",
        "version": "25.2X100",
        "lessThan": "25.2X100-D35-EVO",
        "versionType": "custom"
      },
      {
        "status": "affected",
        "version": "25.4X300",
        "lessThan": "25.4X300-D40-EVO",
        "versionType": "custom"
      }
    ],
    "platforms": [
      "SRX Series"
    ],
    "defaultStatus": "unaffected"
  }
]
Related CVEs
CVE-2026-101938

Source reference: /cveMetadata/cveId

Publisher severity

high

Source reference: /containers/cna/metrics

Event
#23128 · Revision 1
Added to Heist Feed
Publisher date
Read the original announcement