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Review reviewHigh

CVE-2023-2376

Ubiquiti EdgeRouter X, er-x firmware, er-x

A 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 component Web Management Interface. The manipulation of the argument dpi leads to command injection. The attack can be initiated remotely. The exploit has been disclosed publicly and may be used. There are still doubts about whether this vulnerability truly exists. The vendor position is that post-authentication issues are not accepted as vulnerabilities.

CVSS
7.3
EPSS
7.56%
93.9% percentile
CISA KEV
Not listed
Published
2023.04.29
PRIORITY ASSESSMENT

Review review

The CVSS severity warrants an early asset and exposure review.

Known exploitationNot established by KEV
Exploit probability7.56%
Technical severityCVSS 7.3

Vulnerability overview

A 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 component Web Management Interface. The manipulation of the argument dpi leads to command injection. The attack can be initiated remotely. The exploit has been disclosed publicly and may be used. There are still doubts about whether this vulnerability truly exists. The vendor position is that post-authentication issues are not accepted as vulnerabilities.

Affected product and versions

Product
Ubiquiti EdgeRouter X, er-x firmware, er-x
Affected versions
2.0.9-hotfix.0, 2.0.9-hotfix.1, 2.0.9-hotfix.2, 2.0.9-hotfix.3, 2.0.9-hotfix.4, 2.0.9-hotfix.5, 2.0.9-hotfix.6, < 2.0.9, 2.0.9
Fixed versions
2.0.9

Recommended response sequence

Confirm exposure before applying a vendor-supported change.

Full remediation guide
  1. 1
    Identify

    Confirm that Ubiquiti EdgeRouter X, er-x firmware, er-x and an affected version are present.

  2. 2
    Prioritize

    Combine exploitation signals with asset exposure and business criticality.

  3. 3
    Remediate

    Follow the vendor advisory or supported update path and preserve rollback options.

  4. 4
    Verify

    Recheck the version, service health, access paths, and relevant logs.

Technical data

CVSS vector
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:X/V:X/RE:X/U:X
CWE
CWE-74, CWE-77
CVE-2023-2376 — Ubiquiti EdgeRouter X, er-x firmware, er-x | SECUFOCUS NOW