What is CVE-2023-2373?

CVE-2023-2373 is a high-severity vulnerability in Ubiquiti Edgerouter X, classified under Improper Neutralization of Special Elements in Output Used by a Downstream Component (Injection). CVSS score: 7.2/10. Published 2023-04-28.

How severe is CVE-2023-2373?

High severity. CVSS v3 base score is 7.2 out of 10.

RCE in Ubiquiti Edgerouter X

CVE-2023-2373

A vulnerability was identified in Ubiquiti EdgeRouter X up to 2.0.9-hotfix.6. This vulnerability affects unknown code of the component Web Management Interface. Such manipulation of the argument ecn-up leads to command injection. The attack may be performed from remote. The exploit is publicly available and might be used. The actual existence of this vulnerability is currently in question. The vendor position is that post-authentication issues are not accepted as vulnerabilities.

Published 2023-04-28 · last modified 2026-07-09.

CVSS v3 metric

CVSS v3 base score 7.2 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.076 (94.5th percentile), scored 2026-10-20.

Low probability of exploitation in the next 30 days, but still tracked. 95th percentile — 94.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.076 · newest: 0.076 · change: 0.000

Affected products

Ubiquiti Edgerouter X — versions 2.0.9-hotfix.0, 2.0.9-hotfix.1, 2.0.9-hotfix.2
Ui Edgemax Edgerouter Firmware — versions 2.0.9
Ui Er-X
Ui Er-X-Sfp

Weakness classification (CWE)

References

af854a3a-2127-422b-91ae-364da2661108 (technical-description, Third Party Advisory, vdb-entry)
af854a3a-2127-422b-91ae-364da2661108 (signature, Permissions Required, permissions-required, Third Party Advisory)
github.com/leetsun/IoT/tree/main/EdgeRouterX/CI/5 (Exploit, exploit, Third Party Advisory, broken-link)
vuldb.com/vuln/227649 (technical-description, vdb-entry)
vuldb.com/vuln/227649/cti (signature, permissions-required)
vuldb.com/cve/CVE-2023-2373 (third-party-advisory)
vuldb.com/submit/114074 (third-party-advisory)

Frequently asked questions

What is CVE-2023-2373?: CVE-2023-2373 is a high-severity vulnerability in Ubiquiti Edgerouter X, classified under Improper Neutralization of Special Elements in Output Used by a Downstream Component (Injection). CVSS score: 7.2/10. Published 2023-04-28.
How severe is CVE-2023-2373?: High severity. CVSS v3 base score is 7.2 out of 10.