CVE-2026-21915
published 2026-04-09CVE-2026-21915: A Permissive List of Allowed Input vulnerability in the CLI of Juniper Networks Support Insights (JSI) Virtual Lightweight Collector (vLWC) allows a local…
PriorityP342medium6.7CVSS 3.1
AVLACLPRHUINSUCHIHAH
EPSS
2.19%
80.2th percentile
A Permissive List of Allowed Input vulnerability in the CLI of Juniper Networks Support Insights (JSI) Virtual Lightweight Collector (vLWC) allows a local, high privileged attacker to escalate their privileges to root.
The CLI menu accepts input without carefully validating it, which allows for shell command injection. These shell commands are executed with root permissions and can be used to gain complete control of the system.
This issue affects all JSI vLWC versions before 3.0.94.
Affected
1 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| juniper_networks | jsi_lwc | < 3.0.94 | 3.0.94 |
CVSS provenance
nvdv3.16.7MEDIUMCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
nvdv4.08.4HIGHCVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:U/V:X/RE:M/U:X
Stop checking back — get the weekly exploitation signal.
Every Monday: what got weaponized or added to CISA KEV in the last seven days — each CVE cross-linked to its PoC, Nuclei template, and detection rule. Free, one email a week, unsubscribe in one click.
GHSA
GHSA-r893-59mm-pxrg: A Permissive List of Allowed Input vulnerability in the CLI of Juniper Networks Support Insights (JSI) Virtual Lightweight Collector (vLWC) allows a l
ghsa_unreviewed·2026-04-10
CVE-2026-21915 [HIGH] CWE-183 GHSA-r893-59mm-pxrg: A Permissive List of Allowed Input vulnerability in the CLI of Juniper Networks Support Insights (JSI) Virtual Lightweight Collector (vLWC) allows a l
A Permissive List of Allowed Input vulnerability in the CLI of Juniper Networks Support Insights (JSI) Virtual Lightweight Collector (vLWC) allows a local, high privileged attacker to escalate their privileges to root.
The CLI menu accepts input without carefully validating it, which allows for shell command injection. These shell commands are executed with root permissions and can be used to gain complete control of the system.
This issue affects all JSI vLWC versions before 3.0.94.
VulDB
Juniper JSI LWC up to 3.0.93 Virtual Lightweight Collector permissive list of allowed inputs (JSA106016)
vuldb·2026-04-10·CVSS 8.4
CVE-2026-21915 [HIGH] Juniper JSI LWC up to 3.0.93 Virtual Lightweight Collector permissive list of allowed inputs (JSA106016)
A vulnerability labeled as critical has been found in Juniper JSI LWC up to 3.0.93. This impacts an unknown function of the component Virtual Lightweight Collector. The manipulation results in permissive list of allowed inputs.
This vulnerability is reported as CVE-2026-21915. The attack requires a local approach. No exploit exists.
The affected component should be upgraded.
Juniper
CVE-2026-21915: A Permissive List of Allowed Input vulnerability in the CLI of Juniper Networks Support Insights (JSI) Virtual Lightweight Collector (vLWC) allows a l
vendor_juniper·2026-04-09·CVSS 6.7
CVE-2026-21915 [MEDIUM] CWE-183 CVE-2026-21915: A Permissive List of Allowed Input vulnerability in the CLI of Juniper Networks Support Insights (JSI) Virtual Lightweight Collector (vLWC) allows a l
CVE-2026-21915: A Permissive List of Allowed Input vulnerability in the CLI of Juniper Networks Support Insights (JSI) Virtual Lightweight Collector (vLWC) allows a local, high privileged attacker to escalate their privileges to root.
The CLI menu accepts input without carefully validating it, which allows for shell command injection. These shell commands are executed with root permissions and can be used to gain complete control of the system.
This issue affects all JSI vLWC versions before 3.0.94.
No detection rules found.
No public exploits indexed.
No writeups or analysis indexed.
2026-04-09
Published