Quick answers
- Is CVE-2026-18615 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-18615 being exploited in the wild.
- How severe is CVE-2026-18615?
- Critical severity, with a CVSS score of 9.8, published 3 August 2026.
- Which products and versions are affected?
- GL.iNet GL-MT3000 up to 4.4.5.
- Is there a fix for CVE-2026-18615?
- No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
- How is CVE-2026-18615 attacked?
- It is attacked over the network, in a network appliance.
- Am I affected by CVE-2026-18615?
- Check whether you run GL.iNet GL-MT3000 at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.
Technical details
A command injection vulnerability exists in the wg-server.generate_publickey function within the wg-server.so native plugin, accessible via the /cgi-bin/glc endpoint. The vulnerability stems from insufficient input validation on the private_key argument, allowing an attacker to inject shell commands that are executed with device privileges. The attack is remotely exploitable without authentication, and the exploit code has been publicly disclosed. GL-iNet has confirmed the vulnerability exists in firmware versions up to 4.4.5.
Affected products
- GL-iNet GL-MT3000 up to 4.4.5
Timeline
- 2026-08-03: disclosed: Publicly disclosed vulnerability
- 2026-08-03: advisory: CVE-2026-18615 published