Junos OS: SRX1500, vSRX, SRX4K, NFX150, NFX250: Denial of service vulnerability executing local CLI command
Published Oct 16, 2020
5.5
MEDIUMCVSS 3.1
EPSS 0.32%
Description
An input validation vulnerability exists in Juniper Networks Junos OS, allowing an attacker to crash the srxpfe process, causing a Denial of Service (DoS) through the use of specific maintenance commands. The srxpfe process restarts automatically, but continuous execution of the commands could lead to an extended Denial of Service condition. This issue only affects the SRX1500, SRX4100, SRX4200, NFX150, NFX250, and vSRX-based platforms. No other products or platforms are affected by this vulnerability. This issue affects Juniper Networks Junos OS: 15.1X49 versions prior to 15.1X49-D220 on SRX1500, SRX4100, SRX4200, vSRX; 17.4 versions prior to 17.4R3-S3 on SRX1500, SRX4100, SRX4200, vSRX; 18.1 versions prior to 18.1R3-S11 on SRX1500, SRX4100, SRX4200, vSRX, NFX150; 18.2 versions prior to 18.2R3-S5 on SRX1500, SRX4100, SRX4200, vSRX, NFX150, NFX250; 18.3 versions prior to 18.3R2-S4, 18.3R3-S3 on SRX1500, SRX4100, SRX4200, vSRX, NFX150, NFX250; 18.4 versions prior to 18.4R2-S5, 18.4R3-S4 on SRX1500, SRX4100, SRX4200, vSRX, NFX150, NFX250; 19.1 versions prior to 19.1R3-S2 on SRX1500, SRX4100, SRX4200, vSRX, NFX150, NFX250; 19.2 versions prior to 19.2R1-S5, 19.2R3 on SRX1500, SRX4100, SRX4200, vSRX, NFX150, NFX250. This issue does not affect Junos OS 19.3 or any subsequent version.
Affected products
-
- Version 15.1X49StatusaffectedConstraints<15.1X49-D220
- Version 17.4StatusaffectedConstraints<17.4R3-S3
- Version 18.1StatusaffectedConstraints<18.1R3-S11
- Version 18.2StatusaffectedConstraints<18.2R3-S5
- Version 18.3StatusaffectedConstraints<18.3R2-S4, 18.3R3-S3
- Version 18.4StatusaffectedConstraints<18.4R2-S5, 18.4R3-S4
- Version 19.1StatusaffectedConstraints<19.1R3-S2
- Version 19.2StatusaffectedConstraints<19.2R1-S5, 19.2R3
- Version
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | |||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Juniper Networks | Junos OS | n/a |
|
Configuration 1
- 15.1x49
- 15.1x49
- 15.1x49
- 15.1x49
- 15.1x49
- 15.1x49
- 15.1x49
- 15.1x49
- 15.1x49
- 15.1x49
- 15.1x49
- 15.1x49
- 15.1x49
- 15.1x49
- 15.1x49
- 15.1x49
- 15.1x49
- 15.1x49
- 15.1x49
- 15.1x49
- 15.1x49
- 15.1x49
- 15.1x49
- 15.1x49
- 15.1x49
- 15.1x49
- 15.1x49
- 15.1x49
- 15.1x49
- 17.4
- 17.4
- 17.4
- 17.4
- 17.4
- 17.4
- 17.4
- 17.4
- 17.4
- 17.4
- 17.4
- 17.4
- 17.4
- 17.4
- 17.4
- 17.4
- 17.4
- 17.4
- 17.4
- 17.4
- 17.4
- 17.4
Configuration 2
- 18.1
- 18.1
- 18.1
- 18.1
- 18.1
- 18.1
- 18.1
- 18.1
- 18.1
- 18.1
- 18.1
- 18.1
- 18.1
- 18.1
- 18.1
- 18.1
Configuration 3
- 18.2
- 18.2
- 18.2
- 18.2
- 18.2
- 18.2
- 18.2
- 18.2
- 18.2
- 18.2
- 18.2
- 18.2
- 18.2
- 18.2
- 18.2
- 18.2
- 18.2
- 18.2
- 18.3
- 18.3
- 18.3
- 18.3
- 18.3
- 18.3
- 18.3
- 18.3
- 18.3
- 18.3
- 18.3
- 18.3
- 18.3
- 18.3
- 18.4
- 18.4
- 18.4
- 18.4
- 18.4
- 18.4
- 18.4
- 18.4
- 18.4
- 18.4
- 18.4
- 18.4
- 18.4
- 18.4
- 18.4
- 19.1
- 19.1
- 19.1
- 19.1
- 19.1
- 19.1
- 19.1
- 19.1
- 19.1
- 19.1
- 19.2
- 19.2
- 19.2
- 19.2
- 19.2
- 19.2
- 19.2
No data.
No Red Hat product state for this CVE.
No package ranges for this CVE.
Remediation
Vendor solution
The following software releases have been updated to resolve this specific issue: Junos OS 15.1X49-D220, 17.4R3-S3, 18.1R3-S11, 18.2R3-S5, 18.3R2-S4, 18.3R3-S3, 18.4R2-S5, 18.4R3-S4, 19.1R3-S2, 19.2R1-S5, and 19.2R3.
Note: This fix has also been proactively committed into other releases that might not be vulnerable to this issue.
Metrics
No CVSS v4.0 score for this CVE.
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
No CVSS v3.0 score for this CVE.
AV:L/AC:L/Au:N/C:N/I:N/A:P
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 2, 2026.
Score over time
2021–2026- EPSS v1
- EPSS v5
- EPSS v2
- EPSS v3
Percentile over time
- EPSS v1
- EPSS v5
- EPSS v2
- EPSS v3
Table of values (12 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 2, 2026 | 0.32% (0.00324) | 23.22th | v5 (v2026.06.15) |
| Sep 20, 2026 | 0.32% (0.00324) | 25.74th | v5 (v2026.06.15) |
| Jul 20, 2024 | 0.04% (0.00044) | 12.95th | v3 (v2023.03.01) |
| May 25, 2024 | 0.04% (0.00044) | 12.27th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.04% (0.00044) | 10.26th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.04% (0.01036) | 43.31th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.04% (0.01036) | 39.16th | v2 (v2022.01.01) |
| Feb 4, 2022 | 2.76% (0.02763) | 63.78th | v2 (v2022.01.01) |
| Feb 3, 2022 | 3.96% (0.03955) | 72.99th | v1 |
| Jan 6, 2022 | 3.96% (0.03955) | 72.75th | v1 |
| Jan 5, 2022 | 0.91% (0.00909) | 60.79th | v5 (v2026.06.15) |
| Apr 14, 2021 | 0.91% (0.00909) | 0.00th | v1 |
References (1)
- https://kb.juniper.net/JSA11079 x_refsource_CONFIRMVendor Advisory
| Link | Providers | Tags |
|---|---|---|
| https://kb.juniper.net/JSA11079 | x_refsource_CONFIRMVendor Advisory |
Change history (0)
No recorded changes yet.