CVE-2026-102059 (GCVE-0-2026-102059)

Vulnerability from cvelistv5 – Published: 2026-10-14 16:55 – Updated: 2026-10-16 14:18
VLAI
Title
Junos OS and Junos OS Evolved: EX Series, SRX Series, QFX Series: A rogue DHCP server causes root-level command execution when the phone-home client processes specific information
Summary
An Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection') vulnerability in the phone-home daemon (phcd) of Juniper Networks Junos OS and Junos OS Evolved on EX Series, SRX Series, and QFX Series allows an adjacent unauthenticated attacker to execute arbitrary commands with root privileges via a rogue DHCP server.
Severity
8.8 (High)
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
8.7 (High)
CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:L/AU:Y/R:A/V:C/RE:M
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-16 03:56 UTC
CWE
  • CWE-78 - Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
Assigner
juniper CNA under the mitre root
CNA scorecard B 85/100 over 175 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
Juniper Networks Junos OS Affected: 0 , < 23.2R2-S7.7 (custom)
Affected: 23.4 , < 23.4R2-S8.13 (custom)
Affected: 24.2 , < 24.2R2-S5.5 (custom)
Affected: 24.4 , < 24.4R2-S5 (custom)
Affected: 25.2 , < 25.2R2-S2 (custom)
Affected: 25.4 , < 25.4R1-S3 (custom)
Affected: 26.2 , < 26.2R1-S2 (custom)
guessed Create a notification for this product.
Juniper Networks Junos OS Evolved Affected: 0 , < 23.2R2-S7.7-EVO (custom)
Affected: 23.4 , < 23.4R2-S8.11-EVO (custom)
Affected: 24.2 , < 24.2R2-S5.6-EVO (custom)
Affected: 24.4 , < 24.4R2-S5-EVO (custom)
Affected: 25.2 , < 25.2R2-S2-EVO (custom)
Affected: 25.4 , < 25.4R1-S3-EVO (custom)
Affected: 26.2 , < 26.2R1-S2-EVO (custom)
Affected: 23.4X100 (custom)
Affected: 25.2X100 , < 25.2X100-D35-EVO (custom)
Affected: 25.4X300 , < 25.4X300-D40-EVO (custom)
guessed Create a notification for this product.
Date Public
2026-10-14 16:00
Show details on NVD website
To clipboard 

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        ],
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              "defaultStatus": "unaffected",
              "platforms": [
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                "SRX Series",
                "QFX Series"
              ],
              "product": "Junos OS",
              "vendor": "Juniper Networks",
              "versions": [
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                  "version": "0",
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                  "version": "26.2",
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                {
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                  "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"
                }
              ]
            }
          ],
          "datePublic": "2026-10-14T16:00:00.000Z",
          "descriptions": [
            {
              "lang": "en",
              "supportingMedia": [
                {
                  "base64": false,
                  "type": "text/html",
                  "value": "An Improper Neutralization of Special Elements used in an OS Command (\u0027OS Command Injection\u0027) vulnerability in the phone-home daemon (phcd) of Juniper Networks Junos OS and Junos OS Evolved on\u0026nbsp;EX Series, SRX Series, and QFX Series allows an adjacent unauthenticated attacker to execute arbitrary commands with root privileges via a rogue DHCP server."
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          "metrics": [
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              "cvssV3_1": {
                "attackComplexity": "LOW",
                "attackVector": "ADJACENT_NETWORK",
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                "baseScore": 8.8,
                "baseSeverity": "HIGH",
                "confidentialityImpact": "HIGH",
                "integrityImpact": "HIGH",
                "privilegesRequired": "NONE",
                "scope": "UNCHANGED",
                "userInteraction": "NONE",
                "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
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              "format": "CVSS",
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            },
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                "Recovery": "AUTOMATIC",
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                "attackVector": "ADJACENT",
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                "privilegesRequired": "NONE",
                "providerUrgency": "NOT_DEFINED",
                "subAvailabilityImpact": "LOW",
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                "subIntegrityImpact": "NONE",
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                  "cweId": "CWE-78",
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            }
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            "discovery": "INTERNAL"
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          "title": "Junos OS and Junos OS Evolved: EX Series, SRX Series, QFX Series: A rogue DHCP server causes root-level command execution when the phone-home client processes specific information",
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        "assignerShortName": "juniper",
        "cveId": "CVE-2026-102059",
        "datePublished": "2026-10-14T16:55:31.828Z",
        "dateReserved": "2026-09-28T17:35:40.523Z",
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}



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