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TI-2026-74199 Aliases CVE-2026-101967

OS command injection in Junos OS Evolved zero-touch provisioning

Priority MEDIUM 49CWE-78Published · Updated

Key facts

Attack vector
Adjacent network
Privileges required
None
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-78.

Summary

Juniper Networks Junos OS Evolved releases from 24.4 before 24.4R2-S5-EVO, from 25.2 before 25.2R2-S2-EVO, from 25.4 before 25.4R1-S3-EVO, and from 26.2 before 26.2R1-S2-EVO are affected, as are the X100 and X300 releases from 23.4X100, from 25.2X100 before 25.2X100-D35-EVO, and from 25.4X300 before 25.4X300-D40-EVO. An OS command injection flaw (CWE-78) in the bootzd zero-touch provisioning daemon lets crafted input reach the operating system shell. An unauthenticated attacker on the management LAN can execute commands as root by sending a crafted DHCP response.

Written with Claude Haiku 5.5 from the sources below · 2026-10-28

Description from the CNA

An OS Command Injection vulnerability in the bootzd zero-touch provisioning daemon of Juniper Networks Junos OS Evolved allows an unauthenticated attacker on the management LAN to execute commands as root via crafted DHCP response.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.0392 90th percentileScored 2026-11-07
Fix Fixed Junos OS Evolved (Juniper Networks): 24.4R2-S5-EVO, 25.2R2-S2-EVO, 25.4R1-S3-EVO +3

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
JuniperJunos OS Evolved24.4 to before 24.4R2-S5-EVO; 25.2 to before 25.2R2-S2-EVO; 25.4 to before 25.4R1-S3-EVO; 26.2 to before 26.2R1-S2-EVO; 23.4X100; 25.2X100 to before 25.2X100-D35-EVO; 25.4X300 to before 25.4X300-D40-EVO24.4R2-S5-EVO, 25.2R2-S2-EVO, 25.4R1-S3-EVO, 26.2R1-S2-EVO, 25.2X100-D35-EVO, 25.4X300-D40-EVOPatch availableCNA
  • Junos OS Evolved VendorJuniper Affected 24.4 to before 24.4R2-S5-EVO; 25.2 to before 25.2R2-S2-EVO; 25.4 to before 25.4R1-S3-EVO; 26.2 to before 26.2R1-S2-EVO; 23.4X100; 25.2X100 to before 25.2X100-D35-EVO; 25.4X300 to before 25.4X300-D40-EVO Fixed in 24.4R2-S5-EVO, 25.2R2-S2-EVO, 25.4R1-S3-EVO, 26.2R1-S2-EVO, 25.2X100-D35-EVO, 25.4X300-D40-EVO Patch available CNA

CPE names Threatist (inferred) · 1

Inferred from how NVD named this product before; not given by a source.

CPEVersionsRoleVendor
cpe:2.3:o:juniper:junos_os_evolved:*:*:*:*:*:*:*:*——Juniper
  • cpe:2.3:o:juniper:junos_os_evolved:*:*:*:*:*:*:*:* Versions — — ·Juniper

Remediation

Upgrade Junos OS Evolved to 24.4R2-S5-EVO, 25.2R2-S2-EVO, 25.4R1-S3-EVO, or 26.2R1-S2-EVO, or to 25.2X100-D35-EVO or 25.4X300-D40-EVO on the X100 and X300 releases.

Written with Claude Haiku 5.5 from the sources below · 2026-10-28

  • Fix · CNA Junos OS Evolved (Juniper Networks) Fixed in 24.4R2-S5-EVO, 25.2R2-S2-EVO, 25.4R1-S3-EVO, 26.2R1-S2-EVO, 25.2X100-D35-EVO, 25.4X300-D40-EVO

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

  • Advisory ·

    Juniper Networks Junos OS Evolved — supportportal.juniper.net/JSA112250

    12 records Highest priority Priority MEDIUM 8 MEDIUM, 4 LOW

    Other records, highest priority first

    • TI-2026-74245 OS command injection in Junos OS Evolved TACACS+ allows root commandsPriority MEDIUM 52
    • TI-2026-74281 Stack buffer overflow in Junos OS Evolved kernel causes kernel panicPriority MEDIUM 47
    • TI-2026-74207 OS command injection in Junos OS Evolved on PTX SeriesPriority MEDIUM 46
    Show all 12 records → Advisory →

Timeline

  1. 2026-10-15 Threatist record created from CVE-2026-101967
  2. 2026-10-15 CISA SSVC decision points changed
  3. 2026-10-16 Priority changed: LOW → MEDIUM

References

Advisory 1

  • TI-2023-18638 Junos OS: EX and SRX Series: A PHP vulnerability in J-Web allows an unauthenticated to… KEVCVSS 3.1CRITICAL 9.8
  • TI-2020-01585 Out of Cycle Security Advisory: Junos OS: Security vulnerability in J-Web and web based (HTTP/HTTPS) services KEVCVSS 3.1CRITICAL 9.8
  • TI-2015-06436 Juniper ScreenOS 6.2.0r15 through 6.2.0r18, 6.3.0r12 before 6.3.0r12b, 6.3.0r13 before… KEVCVSS 3.1CRITICAL 9.8
  • TI-2022-20885 Apache Commons Text prior to 1.10.0 allows RCE when applied to untrusted input due to insecure interpolation defaults CVSS 3.1CRITICAL 9.8
  • TI-2015-04610 Assertion failure in ISC BIND named via TKEY queries KEVCVSS 3.1HIGH 7.5
  • TI-2025-15550 Junos OS: An local attacker with shell access can execute arbitrary code KEVCVSS 4.0MEDIUM 6.7
See all 1284 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences