Incorrect default permissions in Juniper Junos OS
Priority LOW 32CWE-276Published · Updated
Key facts
- Attack vector
- Local
- Privileges required
- High
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- Low · High · Low
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA.
Summary
On SRX1500, SRX4100, SRX4200, SRX4600, SRX5000 Series with SPC2/SPC3, devices using tenant services on Juniper Networks Junos OS, due to incorrect default permissions assigned to tenant system administrators a tenant system administrator may inadvertently send their network traffic to one or more tenants while concurrently modifying the overall device system traffic management, affecting all tenants and the service provider. Further, a tenant may inadvertently receive traffic from another tenant. This issue affects: Juniper Networks Junos OS 18.3 version 18.3R1 and later versions on SRX1500, SRX4100, SRX4200, SRX4600, SRX5000 Series with SPC2; 18.3 versions prior to 18.3R3 on SRX1500, SRX4100, SRX4200, SRX4600, SRX5000 Series with SPC2; 18.4 versions prior to 18.4R2 on SRX1500, SRX4100, SRX4200, SRX4600, SRX5000 Series with SPC2/SPC3; 19.1 versions prior to 19.1R2 on SRX1500, SRX4100, SRX4200, SRX4600, SRX5000 Series with SPC2/SPC3. This issue does not affect: Juniper Networks Junos OS versions prior to 18.3R1.
Why it matters now
EPSS 0.00236 14th percentileScored 2026-11-07
Fix Fixed Junos OS (Juniper Networks): 18.4R2, 19.1R2
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Juniper | Junos OS | 18.4 to before 18.4R2; 19.1 to before 19.1R2 | 18.4R2, 19.1R2 | Patch available | CNA |
| Juniper | Junos OS | 18.3R1 and later | — | No fix listed | CNA |
- Junos OS VendorJuniper Affected 18.4 to before 18.4R2; 19.1 to before 19.1R2 Fixed in 18.4R2, 19.1R2 Patch available CNA
- Junos OS VendorJuniper Affected 18.3R1 and later Fixed in — No fix listed CNA
CPE configurations NVD · 36
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:juniper:junos:18.3:-:*:*:*:*:*:* | 18.3 | Vulnerable | Juniper |
| cpe:2.3:o:juniper:junos:18.3:r1:*:*:*:*:*:* | 18.3 r1 | Vulnerable | Juniper |
| cpe:2.3:o:juniper:junos:18.3:r1-s1:*:*:*:*:*:* | 18.3 r1-s1 | Vulnerable | Juniper |
| cpe:2.3:o:juniper:junos:18.3:r1-s2:*:*:*:*:*:* | 18.3 r1-s2 | Vulnerable | Juniper |
| cpe:2.3:o:juniper:junos:18.3:r1-s3:*:*:*:*:*:* | 18.3 r1-s3 | Vulnerable | Juniper |
| cpe:2.3:o:juniper:junos:18.3:r1-s4:*:*:*:*:*:* | 18.3 r1-s4 | Vulnerable | Juniper |
| cpe:2.3:o:juniper:junos:18.3:r1-s5:*:*:*:*:*:* | 18.3 r1-s5 | Vulnerable | Juniper |
| cpe:2.3:o:juniper:junos:18.3:r1-s6:*:*:*:*:*:* | 18.3 r1-s6 | Vulnerable | Juniper |
| cpe:2.3:o:juniper:junos:18.3:r2:*:*:*:*:*:* | 18.3 r2 | Vulnerable | Juniper |
| cpe:2.3:o:juniper:junos:18.3:r2-s1:*:*:*:*:*:* | 18.3 r2-s1 | Vulnerable | Juniper |
- cpe:2.3:o:juniper:junos:18.3:-:*:*:*:*:*:* Versions 18.3 Vulnerable ·Juniper
- cpe:2.3:o:juniper:junos:18.3:r1:*:*:*:*:*:* Versions 18.3 r1 Vulnerable ·Juniper
- cpe:2.3:o:juniper:junos:18.3:r1-s1:*:*:*:*:*:* Versions 18.3 r1-s1 Vulnerable ·Juniper
- cpe:2.3:o:juniper:junos:18.3:r1-s2:*:*:*:*:*:* Versions 18.3 r1-s2 Vulnerable ·Juniper
- cpe:2.3:o:juniper:junos:18.3:r1-s3:*:*:*:*:*:* Versions 18.3 r1-s3 Vulnerable ·Juniper
- cpe:2.3:o:juniper:junos:18.3:r1-s4:*:*:*:*:*:* Versions 18.3 r1-s4 Vulnerable ·Juniper
- cpe:2.3:o:juniper:junos:18.3:r1-s5:*:*:*:*:*:* Versions 18.3 r1-s5 Vulnerable ·Juniper
- cpe:2.3:o:juniper:junos:18.3:r1-s6:*:*:*:*:*:* Versions 18.3 r1-s6 Vulnerable ·Juniper
- cpe:2.3:o:juniper:junos:18.3:r2:*:*:*:*:*:* Versions 18.3 r2 Vulnerable ·Juniper
- cpe:2.3:o:juniper:junos:18.3:r2-s1:*:*:*:*:*:* Versions 18.3 r2-s1 Vulnerable ·Juniper
Show 26 more CPE
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:juniper:junos:18.3:r2-s2:*:*:*:*:*:* | 18.3 r2-s2 | Vulnerable | Juniper |
| cpe:2.3:o:juniper:junos:18.3:r2-s3:*:*:*:*:*:* | 18.3 r2-s3 | Vulnerable | Juniper |
| cpe:2.3:o:juniper:junos:18.3:r2-s4:*:*:*:*:*:* | 18.3 r2-s4 | Vulnerable | Juniper |
| cpe:2.3:o:juniper:junos:18.4:-:*:*:*:*:*:* | 18.4 | Vulnerable | Juniper |
| cpe:2.3:o:juniper:junos:18.4:r1:*:*:*:*:*:* | 18.4 r1 | Vulnerable | Juniper |
| cpe:2.3:o:juniper:junos:18.4:r1-s1:*:*:*:*:*:* | 18.4 r1-s1 | Vulnerable | Juniper |
| cpe:2.3:o:juniper:junos:18.4:r1-s2:*:*:*:*:*:* | 18.4 r1-s2 | Vulnerable | Juniper |
| cpe:2.3:o:juniper:junos:18.4:r1-s3:*:*:*:*:*:* | 18.4 r1-s3 | Vulnerable | Juniper |
| cpe:2.3:o:juniper:junos:18.4:r1-s4:*:*:*:*:*:* | 18.4 r1-s4 | Vulnerable | Juniper |
| cpe:2.3:o:juniper:junos:18.4:r1-s5:*:*:*:*:*:* | 18.4 r1-s5 | Vulnerable | Juniper |
| cpe:2.3:o:juniper:junos:18.4:r1-s6:*:*:*:*:*:* | 18.4 r1-s6 | Vulnerable | Juniper |
| cpe:2.3:o:juniper:junos:18.4:r1-s7:*:*:*:*:*:* | 18.4 r1-s7 | Vulnerable | Juniper |
| cpe:2.3:o:juniper:junos:19.1:-:*:*:*:*:*:* | 19.1 | Vulnerable | Juniper |
| cpe:2.3:o:juniper:junos:19.1:r1:*:*:*:*:*:* | 19.1 r1 | Vulnerable | Juniper |
| cpe:2.3:o:juniper:junos:19.1:r1-s1:*:*:*:*:*:* | 19.1 r1-s1 | Vulnerable | Juniper |
| cpe:2.3:o:juniper:junos:19.1:r1-s2:*:*:*:*:*:* | 19.1 r1-s2 | Vulnerable | Juniper |
| cpe:2.3:o:juniper:junos:19.1:r1-s3:*:*:*:*:*:* | 19.1 r1-s3 | Vulnerable | Juniper |
| cpe:2.3:o:juniper:junos:19.1:r1-s4:*:*:*:*:*:* | 19.1 r1-s4 | Vulnerable | Juniper |
| cpe:2.3:o:juniper:junos:19.1:r1-s5:*:*:*:*:*:* | 19.1 r1-s5 | Vulnerable | Juniper |
| cpe:2.3:h:juniper:srx1500:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Juniper |
| cpe:2.3:h:juniper:srx4100:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Juniper |
| cpe:2.3:h:juniper:srx4200:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Juniper |
| cpe:2.3:h:juniper:srx4600:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Juniper |
| cpe:2.3:h:juniper:srx5400:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Juniper |
| cpe:2.3:h:juniper:srx5600:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Juniper |
| cpe:2.3:h:juniper:srx5800:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Juniper |
- cpe:2.3:o:juniper:junos:18.3:r2-s2:*:*:*:*:*:* Versions 18.3 r2-s2 Vulnerable ·Juniper
- cpe:2.3:o:juniper:junos:18.3:r2-s3:*:*:*:*:*:* Versions 18.3 r2-s3 Vulnerable ·Juniper
- cpe:2.3:o:juniper:junos:18.3:r2-s4:*:*:*:*:*:* Versions 18.3 r2-s4 Vulnerable ·Juniper
- cpe:2.3:o:juniper:junos:18.4:-:*:*:*:*:*:* Versions 18.4 Vulnerable ·Juniper
- cpe:2.3:o:juniper:junos:18.4:r1:*:*:*:*:*:* Versions 18.4 r1 Vulnerable ·Juniper
- cpe:2.3:o:juniper:junos:18.4:r1-s1:*:*:*:*:*:* Versions 18.4 r1-s1 Vulnerable ·Juniper
- cpe:2.3:o:juniper:junos:18.4:r1-s2:*:*:*:*:*:* Versions 18.4 r1-s2 Vulnerable ·Juniper
- cpe:2.3:o:juniper:junos:18.4:r1-s3:*:*:*:*:*:* Versions 18.4 r1-s3 Vulnerable ·Juniper
- cpe:2.3:o:juniper:junos:18.4:r1-s4:*:*:*:*:*:* Versions 18.4 r1-s4 Vulnerable ·Juniper
- cpe:2.3:o:juniper:junos:18.4:r1-s5:*:*:*:*:*:* Versions 18.4 r1-s5 Vulnerable ·Juniper
- cpe:2.3:o:juniper:junos:18.4:r1-s6:*:*:*:*:*:* Versions 18.4 r1-s6 Vulnerable ·Juniper
- cpe:2.3:o:juniper:junos:18.4:r1-s7:*:*:*:*:*:* Versions 18.4 r1-s7 Vulnerable ·Juniper
- cpe:2.3:o:juniper:junos:19.1:-:*:*:*:*:*:* Versions 19.1 Vulnerable ·Juniper
- cpe:2.3:o:juniper:junos:19.1:r1:*:*:*:*:*:* Versions 19.1 r1 Vulnerable ·Juniper
- cpe:2.3:o:juniper:junos:19.1:r1-s1:*:*:*:*:*:* Versions 19.1 r1-s1 Vulnerable ·Juniper
- cpe:2.3:o:juniper:junos:19.1:r1-s2:*:*:*:*:*:* Versions 19.1 r1-s2 Vulnerable ·Juniper
- cpe:2.3:o:juniper:junos:19.1:r1-s3:*:*:*:*:*:* Versions 19.1 r1-s3 Vulnerable ·Juniper
- cpe:2.3:o:juniper:junos:19.1:r1-s4:*:*:*:*:*:* Versions 19.1 r1-s4 Vulnerable ·Juniper
- cpe:2.3:o:juniper:junos:19.1:r1-s5:*:*:*:*:*:* Versions 19.1 r1-s5 Vulnerable ·Juniper
- cpe:2.3:h:juniper:srx1500:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Juniper
- cpe:2.3:h:juniper:srx4100:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Juniper
- cpe:2.3:h:juniper:srx4200:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Juniper
- cpe:2.3:h:juniper:srx4600:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Juniper
- cpe:2.3:h:juniper:srx5400:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Juniper
- cpe:2.3:h:juniper:srx5600:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Juniper
- cpe:2.3:h:juniper:srx5800:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Juniper
Remediation
- Fix · CNA Junos OS (Juniper Networks) Fixed in 18.4R2, 19.1R2
Fixed in the same release
Records fixed by the same vendor advisory or release, as the CNA lists them.
- Release ·
Juniper Networks Junos OS 18.3*
2 records Highest priority Priority LOW 2 LOW
Other records, highest priority first
- TI-2021-00169 Incorrect default permissions in Juniper Junos OSPriority LOW 32
Timeline
- 2026-10-02 Threatist record created from CVE-2021-0246
- 2026-10-03 Alias added: GHSA-3qv2-jq3w-6j4x
References
Advisory 1
More Juniper Junos vulnerabilities
- 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-2015-04610 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
- TI-2023-18644 Junos OS: SRX Series: A vulnerability in J-Web allows an unauthenticated attacker to upload and download arbitrary files KEVCVSS 3.1MEDIUM 5.3
- TI-2023-18640 Junos OS: EX Series: A vulnerability in J-Web allows an unauthenticated attacker to upload arbitrary files KEVCVSS 3.1MEDIUM 5.3
Sources
- CVE-2021-0246 · CVE Program
- CVE-2021-0246 · NVD
- FIRST EPSS
- GHSA-3qv2-jq3w-6j4x · GitHub Advisory Database · CC BY 4.0
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