← Vulnerability feed

Vulnerability record · CVE-2023-2374 · published 28 April 2023

CVE-2023-2374: Ui er-x firmware injection vulnerability

Ui · Er X Firmware

A security flaw has been discovered in Ubiquiti EdgeRouter X up to 2.0.9-hotfix.6. This issue affects some unknown processing of the component Web Management Interface. Performing a manipulation of the argument ecn-down results in command injection. It is possible to initiate the attack remotely. The exploit has been released to the public and may be used for attacks. The existence of this vulnerability is still disputed at present. The vendor position is that post-authentication issues are not accepted as vulnerabilities.

7.3 CVSS 4.0 High EPSS 6.9% · top 6.2% CWE-74 · InjectionCWE-77 · Command injection
7.3CVSS 4.0 base score, v2 8.3
6.9%EPSS exploitation probability, 30 days
NoNot in CISA KEV
2Affected product versions listed by NVD
8References, 2 tagged exploit
9 Jul 2026Last modified by NVD

Description

A security flaw has been discovered in Ubiquiti EdgeRouter X up to 2.0.9-hotfix.6. This issue affects some unknown processing of the component Web Management Interface. Performing a manipulation of the argument ecn-down results in command injection. It is possible to initiate the attack remotely. The exploit has been released to the public and may be used for attacks. The existence of this vulnerability is still disputed at present. The vendor position is that post-authentication issues are not accepted as vulnerabilities.

CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P/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:

Affected products

2 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://github.com/leetsun/IoT/tree/main/EdgeRouterX/CI/6 ExploitThird Party Advisory
https://vuldb.com/cve/CVE-2023-2374
https://vuldb.com/submit/114075
https://vuldb.com/vuln/227650
https://vuldb.com/vuln/227650/cti
https://github.com/leetsun/IoT/tree/main/EdgeRouterX/CI/6 ExploitThird Party Advisory
https://vuldb.com/?ctiid.227650 Permissions RequiredThird Party Advisory
https://vuldb.com/?id.227650 Third Party Advisory

Track CVE-2023-2374 inside VULONE

Watch it alongside the ransomware crews, C2 infrastructure and forum chatter that reference it, query it through the API and pull it into your SIEM over TAXII.

Start free Open in platform

Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

8.8CVE-2023-23912Ui usg firmware code injection vulnerabilityA vulnerability, found in EdgeRouters Version 2.0.9-hotfix.5 and earlier and UniFi Security Gateways (USG) Version 4.4.56 and earlier with their DHCP…EPSS 0.96%7.5CVE-2023-2379Ui er-x firmware improper resource shutdown vulnerabilityA 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 We…EPSS 1.3%7.5CVE-2019-16889Ui er-x firmware allocation without limits vulnerabilityUbiquiti EdgeMAX devices before 2.0.3 allow remote attackers to cause a denial of service (disk consumption) because *.cache files in /var/run/beaker…EPSS 5.1%7.3CVE-2023-2377Ui er-x firmware injection vulnerabilityA vulnerability was detected in Ubiquiti EdgeRouter X up to 2.0.9-hotfix.6. The impacted element is an unknown function of the component Web Manageme…EPSS 7.6%7.3CVE-2023-2378Ui er-x firmware injection vulnerabilityA flaw has been found in Ubiquiti EdgeRouter X up to 2.0.9-hotfix.6. This affects an unknown function of the component Web Management Interface. This…EPSS 7.6%7.3CVE-2023-2376Ui er-x firmware injection vulnerabilityA security vulnerability has been detected in Ubiquiti EdgeRouter X up to 2.0.9-hotfix.6. The affected element is an unknown function of the componen…EPSS 7.6%7.3CVE-2023-2375Ui er-x firmware injection vulnerabilityA weakness has been identified in Ubiquiti EdgeRouter X up to 2.0.9-hotfix.6. Impacted is an unknown function of the component Web Management Interfa…EPSS 9.3%10.0CVE-2025-20337Cisco ISE API input validation flaw allows unauthenticated root RCECisco ISE and ISE-PIC fail to properly validate user-supplied input in a specific API, letting an unauthenticated remote attacker execute arbitrary c…KEVEPSS 68%analysed

Source: NIST National Vulnerability Database (record CVE-2023-2374), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.