Junos OS Evolved: A high rate of specific hostbound traffic will cause unexpected hostbound traffic delays or drops
Priority LOW 34CWE-770Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-770.
Summary
An Allocation of Resources Without Limits or Throttling vulnerability in the Packet Forwarding Engine (PFE) of Juniper Networks Junos OS Evolved allows unauthenticated network based attacker to cause a Denial of Service (DoS). On all Junos Evolved platforms hostbound protocols will be impacted by a high rate of specific hostbound traffic from ports on a PFE. Continued receipt of this amount of traffic will create a sustained Denial of Service (DoS) condition. This issue affects Juniper Networks Junos OS Evolved: 21.2 versions prior to 21.2R3-EVO; 21.3 versions prior to 21.3R2-EVO. This issue does not affect Juniper Networks Junos OS Evolved versions prior to 21.2R1.
Why it matters now
EPSS 0.00819 57th percentileScored 2026-11-07
Fix Fixed Junos OS Evolved (Juniper Networks): 21.2R3-EVO, 21.3R2-EVO
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 Evolved | 21.2 to before 21.2R3-EVO; 21.3 to before 21.3R2-EVO | 21.2R3-EVO, 21.3R2-EVO | Patch available | CNA |
- Junos OS Evolved VendorJuniper Affected 21.2 to before 21.2R3-EVO; 21.3 to before 21.3R2-EVO Fixed in 21.2R3-EVO, 21.3R2-EVO Patch available CNA
CPE configurations NVD · 10
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| 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:21.2:-:*:*:*:*:*:* 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 21.2R3-EVO, 21.3R2-EVO
Timeline
- 2026-10-02 Threatist record created from CVE-2022-22212
- 2026-10-03 Alias added: GHSA-3f3p-8vhv-qrj8
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-2022-22212 · CVE Program
- CVE-2022-22212 · NVD
- FIRST EPSS
- GHSA-3f3p-8vhv-qrj8 · GitHub Advisory Database · CC BY 4.0
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