How severe is CVE-2023-2373?

CVE-2023-2373 has a CVSS 3.x base score of 7.2, rated high severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2023-2373 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 8% (94th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-2373?

CVE-2023-2373 primarily affects Ui Edgemax Edgerouter Firmware. In total, 7 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2023-2373?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2023-2373 published?

CVE-2023-2373 was published on 2023-04-28 and last updated on 2026-07-09.

CVE-2023-2373

CVE-2023-2373 is a high-severity vulnerability in Ui Edgemax Edgerouter Firmware with a CVSS 3.x base score of 7.2. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-74.

Key facts

Severity: High (CVSS 3.x base score 7.2)
CVSS v2: 8.3
CVSS v4: 7.3
EPSS exploit prediction: 8% (94th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-74
Affected product: Ui Edgemax Edgerouter Firmware
Published: 2023-04-28
Last modified: 2026-07-09

Description

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.

Frequently asked questions

What is 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.
How severe is CVE-2023-2373?: CVE-2023-2373 has a CVSS 3.x base score of 7.2, rated high severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2023-2373 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 8% (94th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-2373?: CVE-2023-2373 primarily affects Ui Edgemax Edgerouter Firmware. In total, 7 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2023-2373?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2023-2373 published?: CVE-2023-2373 was published on 2023-04-28 and last updated on 2026-07-09.

References

Affected products (7)

cpe:2.3:o:ui:edgemax_edgerouter_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:ui:edgemax_edgerouter_firmware:2.0.9:-:*:*:*:*:*:*
cpe:2.3:o:ui:edgemax_edgerouter_firmware:2.0.9:hotfix1:*:*:*:*:*:*
cpe:2.3:o:ui:edgemax_edgerouter_firmware:2.0.9:hotfix2:*:*:*:*:*:*
cpe:2.3:o:ui:edgemax_edgerouter_firmware:2.0.9:hotfix4:*:*:*:*:*:*
cpe:2.3:o:ui:edgemax_edgerouter_firmware:2.0.9:hotfix5:*:*:*:*:*:*
cpe:2.3:o:ui:edgemax_edgerouter_firmware:2.0.9:hotfix6:*:*:*:*:*:*

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