How severe is CVE-2019-5426?

CVE-2019-5426 has a CVSS 3.x base score of 4.8, rated medium severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2019-5426 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (52nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2019-5426?

CVE-2019-5426 affects Ui Edgeswitch X. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2019-5426?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2019-5426 published?

CVE-2019-5426 was published on 2019-04-10 and last updated on 2026-06-17.

CVE-2019-5426

CVE-2019-5426 is a medium-severity vulnerability in Ui Edgeswitch X with a CVSS 3.x base score of 4.8. 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-287.

Key facts

Severity: Medium (CVSS 3.x base score 4.8)
CVSS v2: 5.8
EPSS exploit prediction: 1% (52nd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-287
Affected product: Ui Edgeswitch X
Published: 2019-04-10
Last modified: 2026-06-17

Description

In Ubiquiti Networks EdgeSwitch X v1.1.0 and prior, an unauthenticated user can use the "local port forwarding" and "dynamic port forwarding" (SOCKS proxy) functionalities. Remote attackers without credentials can exploit this bug to access local services or forward traffic through the device if SSH is enabled in the system settings.

Frequently asked questions

What is CVE-2019-5426?: In Ubiquiti Networks EdgeSwitch X v1.1.0 and prior, an unauthenticated user can use the "local port forwarding" and "dynamic port forwarding" (SOCKS proxy) functionalities. Remote attackers without credentials can exploit this bug to access local services or forward traffic through the device if SSH is enabled in the system settings.
How severe is CVE-2019-5426?: CVE-2019-5426 has a CVSS 3.x base score of 4.8, rated medium severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2019-5426 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (52nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2019-5426?: CVE-2019-5426 affects Ui Edgeswitch X. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2019-5426?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2019-5426 published?: CVE-2019-5426 was published on 2019-04-10 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:ui:edgeswitch_x:*:*:*:*:*:*:*:*

More vulnerabilities in Ui Edgeswitch X

CVE-2019-5425 — High (CVSS 8.8): In Ubiquiti Networks EdgeSwitch X v1.1.0 and prior, an authenticated user can execute arbitrary shell commands over the…
CVE-2019-5424 — High (CVSS 8.8): In Ubiquiti Networks EdgeSwitch X v1.1.0 and prior, a privileged user can execute arbitrary shell commands over the SSH…

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Other CWE-287 (Improper Authentication) vulnerabilities

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CVE-2026-47280 — Critical (CVSS 10.0): Improper authentication in Azure Resource Manager (ARM) allows an unauthorized attacker to elevate privileges over a…
CVE-2026-42822 — Critical (CVSS 10.0): Improper authentication in Azure Local Disconnected Operations allows an unauthorized attacker to elevate privileges…
CVE-2026-20182 — Critical (CVSS 10.0): May 2026: This security advisory provides the details and fix information for a vulnerability that was discovered and…

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