CVE-2026-33784Patch(juniper / virtual_lightweight_collector)

LOWCVSS 9.3 · CRITICAL

Signal is active with 1 mentions in latest observed window

Immediate actions

Patch juniper virtual_lightweight_collector systems immediately

Recommended action window: Monitor and triage in normal cycle

NVD description

A Use of Default Password vulnerability in the Juniper Networks Support Insights (JSI) Virtual Lightweight Collector (vLWC) allows an unauthenticated, network-based attacker to take full control of the device. vLWC software images ship with an initial password for a high privileged account. A change of this password is not enforced during the provisioning of the software, which can make full access to the system by unauthorized actors possible.This issue affects all versions of vLWC before 3.0.94.

juniper CVEs Back to dashboard

0.5/ 10 priority

Sources & remediation

Vendor / third-party advisories

https://kb.juniper.net/JSA107871

Weakness type (CWE)

CWE-1393

Priority

LOW

Exploitation

NONE

PoC

NONE

Patch

AVAILABLE

Momentum

STABLE

Are you affected?

If you run products in this scope, you should treat this CVE as relevant to your environment.

virtual_lightweight_collector

Threat summary

Patch or workaround signal is available
15 mentions across 4 observed days
Momentum state: stable

What's happening

Patch or workaround mentioned in 10 signals
Technical details provided in 14 signals
Disclosure: 6 classified signals
Peaked 2d ago at 7 mentions (2026-04-10); latest day: 1
15 total mentions across 4 days

Affected systems

Vendors

juniper

Products

virtual_lightweight_collector

Deep dive

Activity timeline15 mentions / 4d

Signal classification2 categories

Patch

960.0%

Disclosure

640.0%

Referenced assets14 URLs

By indicator

Classification over time

Date	Total	Labels

2026-04-09	4	Disclosure3Patch1
2026-04-10	7	Disclosure2Patch5
2026-04-11	3	Disclosure1Patch2
2026-04-16	1	Patch1

Full discourse15 posts

CCB Alert@CCBalert184d
Disclosure
Warning: Two Critical vulnerabilities in #Juniper CTP OS & JSI. CVE-2026-33771 & CVE-2026-33784 CVSS: 9.1-9.3. Administrator set password requirements are not enforced on users and changing the default superuser password is not enforced on installation. #Patch #Patch #Patch
Post summary
The post alerts about two critical Juniper CVEs, provides basic technical details such as CVSS scores, but does not supply a PoC, exploit, or patch details.
01002360
7.2K followersView on X
iototsecnews@iototsecnews178d
Patch
Juniper Support Insights の脆弱性 CVE-2026-33784 が FIX：デフォルト認証情報の残存 https://iototsecnews.jp/2026/04/10/juniper-networks-default-credential-vulnerability-allows-unauthorized-full-access/ この問題の原因は、Juniper Networks の vLWC ソフトウェアにおいて、管理者アカウントの初期パスワードが設定された状態で提供され、その変更を強制する仕組みが欠落していたことにあります。そのため、ネットワーク経由でアクセス可能な攻撃者が、既知のデフォルト認証情報を用いるだけで、誰でも簡単にデバイスの完全な制御を奪取できる状態になっています。対策としては、提供されているバージョン 3.0.94 以降への速やかなアップデート、あるいは手動でのパスワード変更が不可欠です。 #CVE202633784 #Juniper #SupportInsights #Vulnerability
Post summary
Juniper vLWC software shipped with default credentials that were not forced to change, enabling full device takeover; users must update to v3.0.94 or manually change passwords to remediate.
01000253
484 followersView on X
Cybersecurity News Everyday@TweetThreatNews183d
Patch
Juniper Networks issued patches for nearly 36 vulnerabilities in Junos OS, vLWC, and more. Top flaw CVE-2026-33784 exposes a default high-privilege password in Support Insights vLWC. #JuniperFix #NetworkSecurity #USA https://ift.tt/uaHFJsw
Post summary
Juniper Networks announced patches for 36 vulnerabilities, including CVE-2026‑33784 which involves a default high‑privilege password in Support Insights vLWC.
00010155
3.9K followersView on X
CyberTech Insights@CyberTech_In184d
Patch
Juniper Networks flaw (CVE-2026-33784, CVSS 9.8) allows full device takeover via default credentials. Update immediately and remove default passwords. 𝐑𝐞𝐚𝐝 𝐅𝐮𝐥𝐥 𝐒𝐭𝐨𝐫𝐲 : https://cybertechnologyinsights.com/cybersecurity/juniper-default-password-flaw-risks-full-device-takeover/ #CyberSecurity #Juniper #Vulnerability #ThreatAlert https://t.co/c6QXOmM33H
Post summary
The CVE-2026-33784 flaw allows full device takeover through default passwords; users are urged to immediately update firmware and remove default credentials.
00010157
12 followersView on X
dbugs@ptdbugs184d
Patch
JSI Virtual Lightweight Collector: Default password is not required to be changed which allows unauthorized high-privileged access CVE: CVE-2026-33784 PT ID: PT-2026-31803 Vendor: Juniper networks Product: JSI LWC CVSS: 9.8 Credits: n/a Description: A Use of Default Password vulnerability in the Juniper Networks Support Insights (JSI) Virtual Lightweight Collector (vLWC) allows an unauthenticated, network-based attacker to take full control of the device. vLWC software images ship with an initial password for a high privileged account. A change of this password is not enforced during the provisioning of the software, which can make full access to the system by unauthorized actors possible.This issue affects all versions of vLWC before 3.0.94. References: • https://dbugs.ptsecurity.com/vulnerability/CVE-2026-33784 • https://kb.juniper.net/JSA107871 #dbugs_vuln
Post summary
The post describes a high‑severity default‑password vulnerability in Juniper’s JSI Virtual Lightweight Collector and links to a vendor advisory that provides a patch, but no PoC or active exploitation evidence is offered.
00010156
788 followersView on X
CVE@CVEnew184d
Disclosure
CVE-2026-33784 A Use of Default Password vulnerability in the Juniper Networks Support Insights (JSI) Virtual Lightweight Collector (vLWC) allows an unauthenticated, network-bas… https://www.cve.org/CVERecord?id=CVE-2026-33784
Post summary
The statement announces CVE‑2026‑33784, a default‑password vulnerability in Juniper Networks’ Virtual Lightweight Collector that allows unauthenticated access. No PoC, exploit, patch, or active exploitation is mentioned.
00010149
57.0K followersView on X
Riskigy@riskigy182d
Patch
Juniper Networks Patches Dozens of Junos OS Vulnerabilities. A critical-severity flaw could be exploited remotely, without authentication, to take over a vulnerable device. The most severe of the flaws is CVE-2026-33784 (CVSS score of 9.8). https://www.securityweek.com/juniper-networks-patches-dozens-of-junos-os-vulnerabilities/ https://t.co/3iZfqvttnf
Post summary
Juniper Networks has released patches for multiple Junos OS vulnerabilities, including a critical flaw (CVE-2026-33784) with a CVSS score of 9.8 that allows remote, unauthenticated takeover of devices.
00000201
313 followersView on X
ねこさん⚡(ΦωΦ)@catnap707183d
Patch
Juniper Networks Patches Dozens of Junos OS Vulnerabilities - SecurityWeek https://www.securityweek.com/juniper-networks-patches-dozens-of-junos-os-vulnerabilities/ "CVE-2026-33784 (CVSS score of 9.8), a default password in the Support Insights (JSI) Virtual Lightweight Collector (vLWC) that could be exploited remotely …"
Post summary
The text announces Juniper Networks issuing patches for a critical default‑password vulnerability (CVE‑2026‑33784) but provides no exploit evidence or mitigation steps beyond the patch.
00000264
3.4K followersView on X
Mr.Rabbit@01ra66it183d
Disclosure
【Juniper JSI vLWC、初期高権限パスワード問題が重大欠陥化】 JuniperのCVE-2026-33784は、vLWCで初期高権限パスワード変更が強制されないことに起因する問題。未認証の遠隔攻撃者に実質的な機器掌握の余地を与えます。 “脆弱なコード”だけでなく“残る初期設定”も同じくらい危険です。 #Juniper #CVE202633784 #DefaultPassword #NetworkSecurity #SOC https://supportportal.juniper.net/s/article/2026-04-Security-Bulletin-vLWC-Default-password-is-not-required-to-be-changed-which-allows-unauthorized-high-privileged-access-CVE-2026-33784
Post summary
The tweet announces CVE-2026-33784, describing how Juniper JSI vLWC’s default high‑privilege password can remain unchanged, allowing unauthenticated remote attackers to gain high‑level access.
00000349
3.5K followersView on X
VulDB 🛡@vuldb184d
Disclosure
We have just added an important vulnerability affecting Juniper JSI LWC (CVE-2026-33784) https://vuldb.com/vuln/356700
Post summary
A new vulnerability (CVE-2026-33784) affecting Juniper JSI LWC has been added to the vuldb.com database, with no additional technical details or exploitation information provided.
00000182
2.1K followersView on X
ThreatCluster@threatcluster184d
Patch
BREAKING: Juniper alerts CVE-2026-33784 in Support Insights vLWC lets unauthenticated attackers use default password for full device control, fixed in release 3.0.94. https://threatcluster.io/cluster/juniper-networks-default-credential-vulnerability-exposes-de-218cf7dd
Post summary
Juniper alerts a default‑credential vulnerability (CVE‑2026‑33784) that allows unauthenticated full device control; a patch is available in release 3.0.94.
00000105
132 followersView on X
SecAlerts@SecAlertsCo184d
Patch
CVSS 9.3 Juniper vulnerability could allow attackers full admin control. Info, incl. fix info, at vulnerability alert service, SecAlerts: CVE-2026-33784: https://secalerts.co/vulnerability/CVE-2026-33784 #ciso #cio #cto #vulnerabilities #cybersecurity #msp #mssp #secalerts #CVE202633784 #Juniper https://t.co/rruRBslTZE
Post summary
A high‑severity Juniper vulnerability (CVE‑2026‑33784, CVSS 9.3) is announced, noting it could grant full administrative control, and directs users to a vulnerability alert service that includes fix information.
00000169
803 followersView on X
CVEFind.com@CveFindCom184d
Patch
[CVE-2026-33784: CRITICAL] Critical vulnerability in Juniper Networks' vLWC allows unauthorized access due to default password. Ensure vLWC versions are at 3.0.94 or newer to mitigate this security risk.#cve,CVE-2026-33784,#cybersecurity https://cvefind.com/CVE-2026-33784
Post summary
Juniper Networks’ vLWC suffers a critical default‑password vulnerability; upgrading to version 3.0.94 or newer resolves the issue.
0000059
619 followersView on X
Red Hornet Intel@RedHornet_Intel184d
Disclosure
CVE-2026-33784 | Juniper Networks JSI LWC | Vulnerability Description A use of default password vulnerability in Juniper Networks JSI Virtual Lightweight Collector (vLWC) allows unauth network-based attackers full control by logging in with the unchanged high-privileged initial password, which is not enforced to be changed during provisioning. Severity: Critical Exploitation: Unknown Public PoC: Unknown Patch Available: Unknown Affected Product: Juniper Networks JSI LWC Affected Version: >= 0 and < 3.0.94 Mitigations - The password can be changed in the setup menu of the device, which is described at Configure Network Settings through JSI Shell | Juniper Support Insights | Juniper Networks https://www.juniper.net/documentation/us/en/software/jsi/vlwc-deploy/topics/topic-map/configure-settings-jsi-shell.html Sources Vendor: https://kb.juniper.net/JSA107871
Post summary
The post announces a critical default password vulnerability (CVE‑2026‑33784) in Juniper JSI vLWC, notes no known exploitation or PoC, but provides mitigation steps via password change.
00000110
7 followersView on X
0day Signal@0dayPublishing184d
Disclosure
🚨 CVE-2026-33784: JSI Virtual Lightweight Collecto... Juniper shipped enterprise monitoring gear with hardcoded admin creds and zero password enforcement - classic supply ch... https://zerodaysignal.com/vulnerability/CVE-2026-33784 #netsec #vulnerability #CVE #sysadmin #zeroday
Post summary
The tweet discloses CVE-2026-33784, highlighting that Juniper devices shipped with hardcoded admin credentials and no password enforcement, but offers no PoC, exploit code, or patch details.
0000072
204 followersView on X

CPE platform detail1 entries

Part:

Vendor:

Product:

Version:

Target SW:

Target HW:

1 of 1 entries

Part	Vendor	Product	Version	Target SW	Target HW
App	juniper	virtual_lightweight_collector	-	-	-

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Back to dashboard juniper CVEs virtual_lightweight_collector vulnerabilities

What researchers are saying

CVE-2026-33784

dbugs[verified]@ptdbugsPatch

The post describes a high‑severity default‑password vulnerability in Juniper’s JSI Virtual Lightweight Collector and links to a vendor advisory that provides a patch, but no PoC or active exploitation evidence is offered.

Mr.Rabbit[verified]@01ra66itDisclosure

The tweet announces CVE-2026-33784, describing how Juniper JSI vLWC’s default high‑privilege password can remain unchanged, allowing unauthenticated remote attackers to gain high‑level access.

ThreatCluster[verified]@threatclusterPatch

Juniper alerts a default‑credential vulnerability (CVE‑2026‑33784) that allows unauthenticated full device control; a patch is available in release 3.0.94.

Red Hornet Intel[verified]@RedHornet_IntelDisclosure

The post announces a critical default password vulnerability (CVE‑2026‑33784) in Juniper JSI vLWC, notes no known exploitation or PoC, but provides mitigation steps via password change.

CCB Alert@CCBalertDisclosure

The post alerts about two critical Juniper CVEs, provides basic technical details such as CVSS scores, but does not supply a PoC, exploit, or patch details.

iototsecnews@iototsecnewsPatch

Juniper vLWC software shipped with default credentials that were not forced to change, enabling full device takeover; users must update to v3.0.94 or manually change passwords to remediate.

Cybersecurity News Everyday@TweetThreatNewsPatch

Juniper Networks announced patches for 36 vulnerabilities, including CVE-2026‑33784 which involves a default high‑privilege password in Support Insights vLWC.

CyberTech Insights@CyberTech_InPatch

The CVE-2026-33784 flaw allows full device takeover through default passwords; users are urged to immediately update firmware and remove default credentials.