Junos OS Evolved: The ssh CLI command always runs as root which can lead to privilege escalation
Key facts
- Attack vector
- Local
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Privilege escalation
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Fixed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-250.
Summary
An Execution with Unnecessary Privileges vulnerability in Management Daemon (mgd) of Juniper Networks Junos OS Evolved allows a locally authenticated attacker with low privileges to escalate their privileges on the device and potentially remote systems. This vulnerability allows a locally authenticated attacker with access to the ssh operational command to escalate their privileges on the system to root, or if there is user interaction on the local device to potentially escalate privileges on a remote system to root. This issue affects Juniper Networks Junos OS Evolved: All versions prior to 20.4R3-S5-EVO; 21.1-EVO versions prior to 21.1R3-EVO; 21.2-EVO versions prior to 21.2R2-S1-EVO, 21.2R3-EVO; 21.3-EVO versions prior to 21.3R2-EVO. This issue does not affect Juniper Networks Junos OS.
Why it matters now
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
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Juniper | Junos OS Evolved | before 20.4R3-S5-EVO; 21.1-EVO to before 21.1R3-EVO; 21.2-EVO to before 21.2R2-S1-EVO, 21.2R3-EVO; 21.3-EVO to before 21.3R2-EVO | 20.4R3-S5-EVO, 21.1R3-EVO, 21.2R2-S1-EVO, 21.2R3-EVO, 21.3R2-EVO | Patch available | CNA |
- Junos OS Evolved VendorJuniper Affected before 20.4R3-S5-EVO; 21.1-EVO to before 21.1R3-EVO; 21.2-EVO to before 21.2R2-S1-EVO, 21.2R3-EVO; 21.3-EVO to before 21.3R2-EVO Fixed in 20.4R3-S5-EVO, 21.1R3-EVO, 21.2R2-S1-EVO, 21.2R3-EVO, 21.3R2-EVO Patch available CNA
CPE configurations NVD · 26
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:juniper:junos_os_evolved:*:*:*:*:*:*:*:* | before 20.4 | Vulnerable | Juniper |
| cpe:2.3:o:juniper:junos_os_evolved:20.4:-:*:*:*:*:*:* | 20.4 | Vulnerable | Juniper |
| cpe:2.3:o:juniper:junos_os_evolved:20.4:r1:*:*:*:*:*:* | 20.4 r1 | Vulnerable | Juniper |
| cpe:2.3:o:juniper:junos_os_evolved:20.4:r1-s1:*:*:*:*:*:* | 20.4 r1-s1 | Vulnerable | Juniper |
| cpe:2.3:o:juniper:junos_os_evolved:20.4:r1-s2:*:*:*:*:*:* | 20.4 r1-s2 | Vulnerable | Juniper |
| cpe:2.3:o:juniper:junos_os_evolved:20.4:r2:*:*:*:*:*:* | 20.4 r2 | Vulnerable | Juniper |
| cpe:2.3:o:juniper:junos_os_evolved:20.4:r2-s1:*:*:*:*:*:* | 20.4 r2-s1 | Vulnerable | Juniper |
| cpe:2.3:o:juniper:junos_os_evolved:20.4:r2-s2:*:*:*:*:*:* | 20.4 r2-s2 | Vulnerable | Juniper |
| cpe:2.3:o:juniper:junos_os_evolved:20.4:r2-s3:*:*:*:*:*:* | 20.4 r2-s3 | Vulnerable | Juniper |
| cpe:2.3:o:juniper:junos_os_evolved:20.4:r3:*:*:*:*:*:* | 20.4 r3 | Vulnerable | Juniper |
- cpe:2.3:o:juniper:junos_os_evolved:*:*:*:*:*:*:*:* Versions before 20.4 Vulnerable ·Juniper
- cpe:2.3:o:juniper:junos_os_evolved:20.4:-:*:*:*:*:*:* Versions 20.4 Vulnerable ·Juniper
- cpe:2.3:o:juniper:junos_os_evolved:20.4:r1:*:*:*:*:*:* Versions 20.4 r1 Vulnerable ·Juniper
- cpe:2.3:o:juniper:junos_os_evolved:20.4:r1-s1:*:*:*:*:*:* Versions 20.4 r1-s1 Vulnerable ·Juniper
- cpe:2.3:o:juniper:junos_os_evolved:20.4:r1-s2:*:*:*:*:*:* Versions 20.4 r1-s2 Vulnerable ·Juniper
- cpe:2.3:o:juniper:junos_os_evolved:20.4:r2:*:*:*:*:*:* Versions 20.4 r2 Vulnerable ·Juniper
- cpe:2.3:o:juniper:junos_os_evolved:20.4:r2-s1:*:*:*:*:*:* Versions 20.4 r2-s1 Vulnerable ·Juniper
- cpe:2.3:o:juniper:junos_os_evolved:20.4:r2-s2:*:*:*:*:*:* Versions 20.4 r2-s2 Vulnerable ·Juniper
- cpe:2.3:o:juniper:junos_os_evolved:20.4:r2-s3:*:*:*:*:*:* Versions 20.4 r2-s3 Vulnerable ·Juniper
- cpe:2.3:o:juniper:junos_os_evolved:20.4:r3:*:*:*:*:*:* Versions 20.4 r3 Vulnerable ·Juniper
Show 16 more CPE
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:juniper:junos_os_evolved:20.4:r3-s1:*:*:*:*:*:* | 20.4 r3-s1 | Vulnerable | Juniper |
| cpe:2.3:o:juniper:junos_os_evolved:20.4:r3-s2:*:*:*:*:*:* | 20.4 r3-s2 | Vulnerable | Juniper |
| cpe:2.3:o:juniper:junos_os_evolved:20.4:r3-s3:*:*:*:*:*:* | 20.4 r3-s3 | Vulnerable | Juniper |
| cpe:2.3:o:juniper:junos_os_evolved:20.4:r3-s4:*:*:*:*:*:* | 20.4 r3-s4 | Vulnerable | Juniper |
| cpe:2.3:o:juniper:junos_os_evolved:21.1:-:*:*:*:*:*:* | 21.1 | Vulnerable | Juniper |
| cpe:2.3:o:juniper:junos_os_evolved:21.1:r1:*:*:*:*:*:* | 21.1 r1 | Vulnerable | Juniper |
| cpe:2.3:o:juniper:junos_os_evolved:21.1:r1-s1:*:*:*:*:*:* | 21.1 r1-s1 | Vulnerable | Juniper |
| cpe:2.3:o:juniper:junos_os_evolved:21.1:r2:*:*:*:*:*:* | 21.1 r2 | Vulnerable | Juniper |
| cpe:2.3:o:juniper:junos_os_evolved:21.2:-:*:*:*:*:*:* | 21.2 | Vulnerable | Juniper |
| cpe:2.3:o:juniper:junos_os_evolved:21.2:r1:*:*:*:*:*:* | 21.2 r1 | Vulnerable | Juniper |
| cpe:2.3:o:juniper:junos_os_evolved:21.2:r1-s1:*:*:*:*:*:* | 21.2 r1-s1 | Vulnerable | Juniper |
| cpe:2.3:o:juniper:junos_os_evolved:21.2:r1-s2:*:*:*:*:*:* | 21.2 r1-s2 | Vulnerable | Juniper |
| cpe:2.3:o:juniper:junos_os_evolved:21.2:r2:*:*:*:*:*:* | 21.2 r2 | Vulnerable | Juniper |
| cpe:2.3:o:juniper:junos_os_evolved:21.3:-:*:*:*:*:*:* | 21.3 | Vulnerable | Juniper |
| cpe:2.3:o:juniper:junos_os_evolved:21.3:r1:*:*:*:*:*:* | 21.3 r1 | Vulnerable | Juniper |
| cpe:2.3:o:juniper:junos_os_evolved:21.3:r1-s1:*:*:*:*:*:* | 21.3 r1-s1 | Vulnerable | Juniper |
- cpe:2.3:o:juniper:junos_os_evolved:20.4:r3-s1:*:*:*:*:*:* Versions 20.4 r3-s1 Vulnerable ·Juniper
- cpe:2.3:o:juniper:junos_os_evolved:20.4:r3-s2:*:*:*:*:*:* Versions 20.4 r3-s2 Vulnerable ·Juniper
- cpe:2.3:o:juniper:junos_os_evolved:20.4:r3-s3:*:*:*:*:*:* Versions 20.4 r3-s3 Vulnerable ·Juniper
- cpe:2.3:o:juniper:junos_os_evolved:20.4:r3-s4:*:*:*:*:*:* Versions 20.4 r3-s4 Vulnerable ·Juniper
- cpe:2.3:o:juniper:junos_os_evolved:21.1:-:*:*:*:*:*:* Versions 21.1 Vulnerable ·Juniper
- cpe:2.3:o:juniper:junos_os_evolved:21.1:r1:*:*:*:*:*:* Versions 21.1 r1 Vulnerable ·Juniper
- cpe:2.3:o:juniper:junos_os_evolved:21.1:r1-s1:*:*:*:*:*:* Versions 21.1 r1-s1 Vulnerable ·Juniper
- cpe:2.3:o:juniper:junos_os_evolved:21.1:r2:*:*:*:*:*:* Versions 21.1 r2 Vulnerable ·Juniper
- cpe:2.3:o:juniper:junos_os_evolved:21.2:-:*:*:*:*:*:* Versions 21.2 Vulnerable ·Juniper
- cpe:2.3:o:juniper:junos_os_evolved:21.2:r1:*:*:*:*:*:* Versions 21.2 r1 Vulnerable ·Juniper
- cpe:2.3:o:juniper:junos_os_evolved:21.2:r1-s1:*:*:*:*:*:* Versions 21.2 r1-s1 Vulnerable ·Juniper
- cpe:2.3:o:juniper:junos_os_evolved:21.2:r1-s2:*:*:*:*:*:* Versions 21.2 r1-s2 Vulnerable ·Juniper
- cpe:2.3:o:juniper:junos_os_evolved:21.2:r2:*:*:*:*:*:* Versions 21.2 r2 Vulnerable ·Juniper
- cpe:2.3:o:juniper:junos_os_evolved:21.3:-:*:*:*:*:*:* Versions 21.3 Vulnerable ·Juniper
- cpe:2.3:o:juniper:junos_os_evolved:21.3:r1:*:*:*:*:*:* Versions 21.3 r1 Vulnerable ·Juniper
- cpe:2.3:o:juniper:junos_os_evolved:21.3:r1-s1:*:*:*:*:*:* Versions 21.3 r1-s1 Vulnerable ·Juniper
Remediation
- Fix · CNA Junos OS Evolved (Juniper Networks) Fixed in 20.4R3-S5-EVO, 21.1R3-EVO, 21.2R2-S1-EVO, 21.2R3-EVO, 21.3R2-EVO
Timeline
- 2026-10-02 Threatist record created from CVE-2022-22239
- 2026-10-03 Alias added: GHSA-h38r-wg7q-9555
References
Advisory 1
More Juniper Junos Os Evolved vulnerabilities
- TI-2026-17602 Junos OS Evolved: PTX Series: A vulnerability allows a unauthenticated, network-based attacker to execute code as root CVSS 4.0CRITICAL 9.3
- TI-2026-17601 Junos OS and Junos OS Evolved: Configuration of a specific SSH option results in mgd crash CVSS 4.0MEDIUM 6.7
- TI-2023-04136 Improper input validation in Juniper Junos OS CVSS 3.1HIGH 7.5
- TI-2026-74215 Stack-based buffer overflow in Junos OS rpd triggered by BGP peers CVSS 4.0CRITICAL 9.3
- TI-2026-74211 Authentication bypass in Juniper J-Web allows pre-auth CGI execution CVSS 4.0CRITICAL 9.3
- TI-2021-00146 Junos OS and Junos OS Evolved: Upon receipt of a specific BGP FlowSpec message network traffic may be disrupted. CVSS 3.1CRITICAL 10.0
Sources
- CVE-2022-22239 · CVE Program
- CVE-2022-22239 · NVD
- FIRST EPSS
- GHSA-h38r-wg7q-9555 · GitHub Advisory Database · CC BY 4.0
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