Quick answers
- Is CVE-2026-101986 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-101986 being exploited in the wild.
- How severe is CVE-2026-101986?
- Critical severity, with a CVSS score of 9.8, published 14 October 2026.
- Which products and versions are affected?
- Juniper Networks Junos OS; Juniper Networks Junos OS Evolved.
- Is there a fix for CVE-2026-101986?
- No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
- How is CVE-2026-101986 attacked?
- It is attacked over the network, in a network appliance.
- Am I affected by CVE-2026-101986?
- Check whether you run Juniper Junos, Juniper Junos Os Evolved, Juniper Networks Junos OS or one of the others listed. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.
Technical details
An improper authentication vulnerability in J-Web allows unauthenticated network attackers to bypass authentication and execute CGI content with elevated privileges via a crafted HTTP request. The vulnerability is network-accessible and requires no user interaction or prior authentication. Successful exploitation grants administrative code execution on the affected device.
Affected products
- Juniper Networks Junos OS
- Juniper Networks Junos OS Evolved
Timeline
- 2026-10-14: disclosed