vulntracker.iovulntracker.io
© 2026 vulntracker.io

CVE-2023-2379

Ubiquiti EdgeRouter X Web Service denial of service

HIGH
7.5
CVSS Score
Published: April 28, 2023 at 04:31 PM UTC
Updated: June 17, 2026 at 05:52 AM UTC
5 products affected across 2 vendorsEr X Sfp FirmwareEr X FirmwareEr-X

Using EdgeRouter X by Ubiquiti?

Get instant alerts when new vulnerabilities affect EdgeRouter X - before attackers find them.

Real-time alertsTrack your software stackFree plan available
Start FreeSign In
Severity
HIGH7.5
Exploit prediction
EPSS 1%
SSVC
No known exploit

Description

A vulnerability classified as critical has been found in Ubiquiti EdgeRouter X up to 2.0.9-hotfix.6. This affects an unknown part of the component Web Service. The manipulation leads to denial of service. It is possible to initiate the attack remotely. The exploit has been disclosed to the public and may be used. The associated identifier of this vulnerability is VDB-227655.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Er X Firmware· UI
95%
v < 2.0.92.0.92.0.9 hotfix22.0.9 hotfix32.0.9 hotfix42.0.9 hotfix52.0.9 hotfix6
Affected range stops below 2.0.9, so it looks safe — our inference, not a vendor statement
ui-er-x (same device)
Er X Sfp Firmware· UI
95%
v < 2.0.92.0.92.0.9 hotfix22.0.9 hotfix32.0.9 hotfix42.0.9 hotfix52.0.9 hotfix6
Affected range stops below 2.0.9, so it looks safe — our inference, not a vendor statement
ui-er-x-sfp (same device)
EdgeRouter X· Ubiquiti
60%
2.0.9-hotfix.02.0.9-hotfix.12.0.9-hotfix.22.0.9-hotfix.32.0.9-hotfix.42.0.9-hotfix.52.0.9-hotfix.6
Er-X· UIdevice
80%
All versions
Er-X-Sfp· UIdevice
80%
All versions

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (3)

Broken LinkExploitThird Party Advisory
Source: [email protected]
https://github.com/leetsun/IoT/tree/main/EdgeRouterX/DoS
SignaturePermissions RequiredThird Party Advisory
Source: [email protected]
https://vuldb.com/?ctiid.227655
VDB EntryTechnical DescriptionThird Party Advisory
Source: [email protected]
https://vuldb.com/?id.227655

SSVC — Action Prioritization

SSVCNo known exploitAutomatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

7.5HIGHVulDB
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-404

Get alerted

Stop reading CVE feeds looking for your own stack

Track the products you run and VulnTracker tells you when a new CVE affects them — with what is known about fixing it, and nothing about the rest.

Create accountSign in
Free plan, no card