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InjectionWeakness · CWE-74

CVE-2026-18599

HIGH · 8.0 CVSS v3.1 Published 2026-08-03
No fix yet
No fix has been published. The vendor has not shipped a fixed release or patch. You remain exposed.
See remediation →
82/100
Remediation priority · High
Zero-click 2 weeks old

Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.

NVD · unedited
A flaw has been found in GL.iNet GL-MT3000 up to 4.4.5. The impacted element is the function logread.set_config of the file /usr/lib/oui-httpd/rpc/logread of the component Logread Lua RPC Plugin. This manipulation of the argument record_size causes command injection. The exploit has been published and may be used. The vendor was contacted early about this disclosure and confirmed the existence of the vulnerability.

Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.

dbcve analysis
How this class of weakness works · CWE-74

Untrusted input crosses into a downstream interpreter — SQL, a shell, an HTML page, an LDAP query — without being kept separate from the commands around it, so the attacker's data is read as instructions. This is the parent class behind SQL injection, cross-site scripting, and command injection alike. The durable fix is the same everywhere: keep data and code apart at every boundary, using parameterisation or context-aware encoding rather than building interpreted strings by concatenation.

General guidance for the injection class — the official description and references above are authoritative for this specific CVE. Want a bespoke review and a reviewed fix? Ask our team →

CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.

From the vector
Attack vector
Adjacent
Complexity
Low
Privileges
Low
User interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.

dbcve · scoped
Recommended fix Moderate confidence

Upgrade to the latest GL-MT3000 firmware version available from GL.iNet (ensure version is newer than 4.4.5)

  1. 1. Identify the current firmware version on the GL-MT3000 device by accessing the web admin interface (typically at 192.168.8.1) or via CLI using 'ubus call system board'
  2. 2. Navigate to the GL.iNet official support page or download center for the GL-MT3000 model
  3. 3. Download the latest available firmware version (ensure it is newer than 4.4.5)
  4. 4. Access the router's admin panel, go to System > Firmware or Administration > Backup/Flash Firmware
  5. 5. Upload the new firmware file and allow the device to flash and reboot
  6. 6. After reboot, verify the new firmware version is installed and confirm the vulnerability is resolved
  7. 7. If a newer version is not available from GL.iNet, consider implementing network segmentation or restricting access to the affected RPC interface as a temporary mitigation
Caveat Standard router firmware upgrade risks apply - ensure backup of configuration before flashing; some settings may require reconfiguration after upgrade

Generated from the published advisory — verify against the referenced sources before acting.

No vendor fix exists The vendor has not published a patch for this.

There is no version to upgrade to and no patch to apply. Every affected install stays exposed until the vendor ships a fix — or somebody else builds one.

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References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.

Primary sources

Practitioner notes

Contributed

Peer-ranked notes from engineers who’ve handled CVE-2026-18599 in production — separate from our analysis above.

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