CVE-2026-101954 Junos OS and Junos OS Evolved: Unauthenticated network access causes full device takeover when J-Web is enabled
Unauthenticated attackers can take over Juniper devices with root access if the J-Web management interface is enabled.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-101954?
CVE-2026-101954 is a critical authentication bypass vulnerability in Juniper Networks Junos OS, published on 14 Oct 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
An Improper Authentication vulnerability in the J-Web management interface and its NETCONF session handling of Juniper Networks Junos OS and Junos OS Evolved allows an unauthenticated network attacker to obtain root-level device configuration access and take over the device via a reachable J-Web HTTP or HTTPS service when web management is enabled.
Weakness: CWE-287
Which versions are affected by CVE-2026-101954?
How do I fix CVE-2026-101954?
No fix has been published for CVE-2026-101954 yet. Limit exposure of the affected software until one is available.
Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.
Is CVE-2026-101954 being exploited?
There is no known exploitation of CVE-2026-101954 in the wild and no public exploit code.
Sources
Also known as GHSA-34c5-5qc5-99pf.