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CVE-2023-50919

Gl-inet Gl-a1300 Firmware authentication bypass

9.8 CRITICALPublic exploitEPSS 47.8%
  1. Published12 Jan 2024

Description

An issue was discovered on GL.iNet devices before version 4.5.0. There is an NGINX authentication bypass via Lua string pattern matching. This affects A1300 4.4.6, AX1800 4.4.6, AXT1800 4.4.6, MT3000 4.4.6, MT2500 4.4.6, MT6000 4.5.0, MT1300 4.3.7, MT300N-V2 4.3.7, AR750S 4.3.7, AR750 4.3.7, AR300M 4.3.7, and B1300 4.3.7.

CVSS 3.1 breakdown

Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionNone
ScopeUnchanged
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

Gl-inet Gl-a1300 Firmware4.3.7 · 4.4.6
Gl-inet Gl-ar300m Firmware4.3.7 · 4.4.6
Gl-inet Gl-ar750 Firmware4.3.7 · 4.4.6
Gl-inet Gl-ar750s Firmware4.3.7 · 4.4.6
Gl-inet Gl-ax1800 Firmware4.3.7 · 4.4.6
Gl-inet Gl-axt1800 Firmware4.3.7 · 4.4.6
Gl-inet Gl-b1300 Firmware4.3.7 · 4.4.6
Gl-inet Gl-mt1300 Firmware4.3.7 · 4.4.6
Gl-inet Gl-mt2500 Firmware4.3.7 · 4.4.6
Gl-inet Gl-mt3000 Firmware4.3.7 · 4.4.6
Gl-inet Gl-mt300n-v2 Firmware4.3.7 · 4.4.6
Gl-inet Gl-mt6000 Firmware4.3.7 · 4.4.6

Remediation

No fixed version is recorded in the NVD data. Check the vendor advisory for the latest guidance.

References

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Frequently asked

Is CVE-2023-50919 being actively exploited?

CVE-2023-50919 is not in the CISA KEV catalog. A public exploit reference exists, so treat it as exploitable. Its EPSS exploit probability is 47.8%.

How severe is CVE-2023-50919?

CVE-2023-50919 has a CVSS 3.1 base score of 9.8, rated critical. EPSS estimates a 47.8% probability of exploitation.

Which products are affected by CVE-2023-50919?

Affected products include Gl-inet Gl-a1300 Firmware, Gl-inet Gl-ar300m Firmware, Gl-inet Gl-ar750 Firmware, Gl-inet Gl-ar750s Firmware, Gl-inet Gl-ax1800 Firmware, and 7 more.

How do I fix CVE-2023-50919?

Apply the vendor's patch or advisory guidance, then verify no affected versions remain across your devices.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2023-50919 against the real software inventory on every managed device, as each hourly inventory arrives. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.