CVE-2026-101986
Last modified
CVE-2026-101986 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. An Improper Authentication vulnerability in J-Web of Juniper Networks Junos OS and Junos OS Evolved allows an unauthenticated network attacker to bypass J-Web authentication and execute CGI content with elevated privileges via a crafted HTTP request.. EPSS estimates a 0.58% chance of exploitation in the next 30 days.
Description
An Improper Authentication vulnerability in J-Web of Juniper Networks Junos OS and Junos OS Evolved allows an unauthenticated network attacker to bypass J-Web authentication and execute CGI content with elevated privileges via a crafted HTTP request.
Metrics
Weakness Enumeration
Affected Software
| Vendor | Product | Versions | Update |
|---|---|---|---|
| Juniper | Junos Os Evolved | <= 23.1 | — |
| Juniper | Junos Os Evolved | 23.2 | — |
| Juniper | Junos Os Evolved | 23.4 | — |
| Juniper | Junos Os Evolved | 23.4x100 | — |
| Juniper | Junos Os Evolved | 24.2 | — |
| Juniper | Junos Os Evolved | 24.4 | — |
| Juniper | Junos Os Evolved | 25.2 | — |
| Juniper | Junos Os Evolved | 25.2x100 | D10 |
| Juniper | Junos Os Evolved | 25.4 | — |
| Juniper | Junos Os Evolved | 25.4x300 | D10 |
| Juniper | Junos Os Evolved | 26.2 | — |
| Juniper | Junos | <= 23.1 | — |
| Juniper | Junos | 23.2 | — |
| Juniper | Junos | 23.4 | — |
| Juniper | Junos | 24.2 | — |
| Juniper | Junos | 24.4 | — |
| Juniper | Junos | 25.2 | — |
| Juniper | Junos | 25.4 | — |
| Juniper | Junos | 26.2 | — |
References
- https://supportportal.juniper.net/JSA112187Vendor Advisory
Timeline
- Published
- Last Modified
- Status
- Analyzed
Frequently Asked Questions
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How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
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