Incorrect permission assignment in Juniper Junos OS Evolved
Key facts
- Attack vector
- Local
- Privileges required
- Low
- User interaction
- Required
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA.
Summary
An Incorrect Permission Assignment vulnerability in shell processing of Juniper Networks Junos OS Evolved allows a low-privileged local user to modify the contents of a configuration file which could cause another user to execute arbitrary commands within the context of the follow-on user's session. If the follow-on user is a high-privileged administrator, the attacker could leverage this vulnerability to take complete control of the target system. While this issue is triggered by a user, other than the attacker, accessing the Junos shell, an attacker simply requires Junos CLI access to exploit this vulnerability. This issue affects Juniper Networks Junos OS Evolved: 20.4-EVO versions prior to 20.4R3-S1-EVO; All versions of 21.1-EVO; 21.2-EVO versions prior to 21.2R3-EVO; 21.3-EVO versions prior to 21.3R2-EVO. This issue does not affect Juniper Networks Junos OS Evolved versions prior to 19.2R1-EVO.
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 | 20.4-EVO to before 20.4R3-S1-EVO; 21.1R1-EVO and later; 21.2-EVO to before 21.2R3-EVO; 21.3-EVO to before 21.3R2-EVO | 20.4R3-S1-EVO, 21.2R3-EVO, 21.3R2-EVO | Patch available | CNA |
- Junos OS Evolved VendorJuniper Affected 20.4-EVO to before 20.4R3-S1-EVO; 21.1R1-EVO and later; 21.2-EVO to before 21.2R3-EVO; 21.3-EVO to before 21.3R2-EVO Fixed in 20.4R3-S1-EVO, 21.2R3-EVO, 21.3R2-EVO Patch available CNA
CPE configurations NVD · 25
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| 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:21.1:-:*:*:*:*:*:* | 21.1 | 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
- cpe:2.3:o:juniper:junos_os_evolved:21.1:-:*:*:*:*:*:* Versions 21.1 Vulnerable ·Juniper
Show 15 more CPE
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| 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:21.1:r3:*:*:*:*:*:* | 21.1 r3 | Vulnerable | Juniper |
| cpe:2.3:o:juniper:junos_os_evolved:21.1:r3-s1:*:*:*:*:*:* | 21.1 r3-s1 | 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:21.2:r2-s1:*:*:*:*:*:* | 21.2 r2-s1 | Vulnerable | Juniper |
| cpe:2.3:o:juniper:junos_os_evolved:21.2:r2-s2:*:*:*:*:*:* | 21.2 r2-s2 | 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: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:21.1:r3:*:*:*:*:*:* Versions 21.1 r3 Vulnerable ·Juniper
- cpe:2.3:o:juniper:junos_os_evolved:21.1:r3-s1:*:*:*:*:*:* Versions 21.1 r3-s1 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:21.2:r2-s1:*:*:*:*:*:* Versions 21.2 r2-s1 Vulnerable ·Juniper
- cpe:2.3:o:juniper:junos_os_evolved:21.2:r2-s2:*:*:*:*:*:* Versions 21.2 r2-s2 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-S1-EVO, 21.2R3-EVO, 21.3R2-EVO
Timeline
- 2026-10-02 Threatist record created from CVE-2022-22248
- 2026-10-03 Alias added: GHSA-64r3-fpcv-4frw
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-2022-22248 · CVE Program
- CVE-2022-22248 · NVD
- FIRST EPSS
- GHSA-64r3-fpcv-4frw · GitHub Advisory Database · CC BY 4.0
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