How severe is CVE-2023-1456?

CVE-2023-1456 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-2023-1456 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (78th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-1456?

CVE-2023-1456 affects Ui Edgerouter X Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2023-1456?

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-2023-1456 published?

CVE-2023-1456 was published on 2023-03-25 and last updated on 2026-06-17.

CVE-2023-1456

CVE-2023-1456 is a high-severity vulnerability in Ui Edgerouter X 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-77.

Key facts

Severity: High (CVSS 3.x base score 7.2)
EPSS exploit prediction: 2% (78th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-77
Affected product: Ui Edgerouter X Firmware
Published: 2023-03-25
Last modified: 2026-06-17

Description

A vulnerability, which was classified as critical, has been found in Ubiquiti EdgeRouter X 2.0.9-hotfix.6. This issue affects some unknown processing of the component NAT Configuration Handler. The manipulation leads to command injection. The attack may be initiated remotely. The exploit has been disclosed to the public and may be used. The real existence of this vulnerability is still doubted at the moment. The identifier VDB-223301 was assigned to this vulnerability. NOTE: The vendor position is that post-authentication issues are not accepted as vulnerabilities.

Frequently asked questions

What is CVE-2023-1456?: A vulnerability, which was classified as critical, has been found in Ubiquiti EdgeRouter X 2.0.9-hotfix.6. This issue affects some unknown processing of the component NAT Configuration Handler. The manipulation leads to command injection. The attack may be initiated remotely. The exploit has been disclosed to the public and may be used. The real existence of this vulnerability is still doubted at the moment. The identifier VDB-223301 was assigned to this vulnerability. NOTE: The vendor position is that post-authentication issues are not accepted as vulnerabilities.
How severe is CVE-2023-1456?: CVE-2023-1456 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-2023-1456 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (78th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-1456?: CVE-2023-1456 affects Ui Edgerouter X Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2023-1456?: 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-2023-1456 published?: CVE-2023-1456 was published on 2023-03-25 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:o:ui:edgerouter_x_firmware:2.0.9:hotfix6:*:*:*:*:*:*

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