CVE-2026-101956Junos OS: Unauthorized root command execution when J-Web is enabled
Updated under an hour ago ()
Does this affect you?
It affects Juniper Networks Junos OS. Add what you run to find out whether that includes you.
EPSS puts the chance of exploitation in the next 30 days at 0.75%, higher than 54% of scored CVEs.
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An Improper Authentication vulnerability in the J-Web web management component of Juniper Networks Junos OS allows an unauthenticated remote attacker to execute arbitrary Junos commands with root privileges via the exposed J-Web web interface.
- CVSS
- 9.8 CRITICAL (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- Weakness (CWE)
- CWE-287
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- 0.75% (percentile 54)
- Assigned by
- juniper
- NVD analysis
- Awaiting Analysis
- Record last updated
- Oct 15, 2026
- First seen by InfoSec Signals
- Oct 14, 2026
Affected products
Juniper Networks Junos OS juniper_networks:junos_os (from the name) | from 25.2 before 25.2R2-S2; from 25.4 before 25.4R1-S3; from 26.2 before 26.2R1-S2 | CNA record |
References
- https://supportportal.juniper.net/JSA112188vendor-advisory
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.