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PatchSiren cyber security CVE debrief

CVE-2026-18598 GL.iNet CVE debrief

A vulnerability was detected in GL.iNet GL-MT3000 up to 4.4.5. The affected element is the function logread.get_system_log of the file /usr/lib/oui-httpd/rpc/logread of the component Logread Lua RPC plugin. The manipulation of the argument module results in command injection. The attack can be launched remotely. The exploit is now public and may be used.

Vendor
GL.iNet
Product
GL-MT3000
CVSS
HIGH 7.4
CISA KEV
Not listed in stored evidence
Original CVE published
2026-08-03
Original CVE updated
2026-10-23
Advisory published
2026-08-03
Advisory updated
2026-10-23

Who should care

Defenders responsible for GL.iNet GL-MT3000 devices, particularly those in IoT or networked environments, should assess exposure and prioritize verification and potential remediation efforts.

Why it matters

Defenders should prioritize verifying exposure of GL.iNet GL-MT3000 devices running firmware up to 4.4.5 and assess the effectiveness of current compensating controls due to the publicly available exploit for the command injection vulnerability.

  • Verify exposure of GL.iNet GL-MT3000 devices running firmware up to 4.4.5
  • Assess the effectiveness of current compensating controls
  • Monitor for potential exploitation attempts
  • Apply vendor-provided patches or updates when available

Technical summary

The vulnerability is located in the logread.get_system_log function of the /usr/lib/oui-httpd/rpc/logread file in the Logread Lua RPC plugin of GL.iNet GL-MT3000 devices running firmware up to 4.4.5. The manipulation of the module argument leads to command injection, allowing for remote attacks. Defenders should prioritize verifying exposure of GL.iNet GL-MT3000 devices running firmware up to 4.4.5 and assess the effectiveness of current compensating controls due to the publicly available exploit for the command injection vulnerability.

Defensive priority

Defenders should prioritize verifying exposure of GL.iNet GL-MT3000 devices running firmware up to 4.4.5 and assess the effectiveness of current compensating controls.

Recommended defensive actions

  • Verify exposure of GL.iNet GL-MT3000 devices running firmware up to 4.4.5
  • Assess the effectiveness of current compensating controls
  • Monitor for potential exploitation attempts
  • Apply vendor-provided patches or updates when available
  • Review compensating controls for exposed systems while remediation is scheduled and verified
  • Check relevant monitoring, detection, and logs for exposed assets that need extra review
  • Track exceptions, retest remediated assets, and close the item only after evidence is documented

Evidence notes

The CVE record and NVD entry provide details on the vulnerability, including its description, CVSS score, and affected product. Additional information is available from Vuldb. Defenders should verify exposure of GL.iNet GL-MT3000 devices running firmware up to 4.4.5 and assess the effectiveness of current compensating controls. The exploit is publicly available, and defenders should monitor for potential exploitation attempts.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-18598 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-18598

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2026-18598 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-18598

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Supplemental references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.