Junos OS Evolved: A port which has been inadvertently exposed can be reached by an attacker
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Attack requirements
- None
- Impact type
- —
- Confidentiality · integrity · availability
- Low · Low · Low
- Fix status
- Fixed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA.
Summary
An Improper Restriction of Communication Channel to Intended Endpoints vulnerability in Juniper Networks Junos OS Evolved allows an unauthenticated, network-based attacker to cause license exhaustion. Due to an incorrect initialization, a process which should only be able to communicate internally within the device, can be reached over the network via an open port. This leads to unauthorized access to the license management. This issue affects all Junos OS Evolved versions before 23.2R2-EVO.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- Yes
- Technical impact
- Partial
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 23.2R2-EVO | 23.2R2-EVO | Patch available | CNA |
- Junos OS Evolved VendorJuniper Affected before 23.2R2-EVO Fixed in 23.2R2-EVO Patch available CNA
CPE configurations NVD · 5
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:juniper:junos_os_evolved:*:*:*:*:*:*:*:* | before 23.2 | Vulnerable | Juniper |
| cpe:2.3:o:juniper:junos_os_evolved:23.2:-:*:*:*:*:*:* | 23.2 | Vulnerable | Juniper |
| cpe:2.3:o:juniper:junos_os_evolved:23.2:r1:*:*:*:*:*:* | 23.2 r1 | Vulnerable | Juniper |
| cpe:2.3:o:juniper:junos_os_evolved:23.2:r1-s1:*:*:*:*:*:* | 23.2 r1-s1 | Vulnerable | Juniper |
| cpe:2.3:o:juniper:junos_os_evolved:23.2:r1-s2:*:*:*:*:*:* | 23.2 r1-s2 | Vulnerable | Juniper |
- cpe:2.3:o:juniper:junos_os_evolved:*:*:*:*:*:*:*:* Versions before 23.2 Vulnerable ·Juniper
- cpe:2.3:o:juniper:junos_os_evolved:23.2:-:*:*:*:*:*:* Versions 23.2 Vulnerable ·Juniper
- cpe:2.3:o:juniper:junos_os_evolved:23.2:r1:*:*:*:*:*:* Versions 23.2 r1 Vulnerable ·Juniper
- cpe:2.3:o:juniper:junos_os_evolved:23.2:r1-s1:*:*:*:*:*:* Versions 23.2 r1-s1 Vulnerable ·Juniper
- cpe:2.3:o:juniper:junos_os_evolved:23.2:r1-s2:*:*:*:*:*:* Versions 23.2 r1-s2 Vulnerable ·Juniper
Remediation
- Fix · CNA Junos OS Evolved (Juniper Networks) Fixed in 23.2R2-EVO
Timeline
- 2026-10-02 Threatist record created from CVE-2026-57028
- 2026-10-03 Alias added: GHSA-jvwv-xxr5-8965
References
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-2026-57028 · CVE Program
- CVE-2026-57028 · NVD
- FIRST EPSS
- GHSA-jvwv-xxr5-8965 · GitHub Advisory Database · CC BY 4.0
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