Quick answers
- Is CVE-2026-109109 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-109109 being exploited in the wild.
- How severe is CVE-2026-109109?
- Critical severity, with a CVSS score of 10, published 13 October 2026.
- Which products and versions are affected?
- Wavlink WL-WN530BE1-A 251117.
- Is there a fix for CVE-2026-109109?
- Yes: fixed in <UNKNOWN>. Until then: <UNKNOWN> Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
- How is CVE-2026-109109 attacked?
- It is attacked over the network, in device firmware.
- Am I affected by CVE-2026-109109?
- Check whether you run Wavlink WL-WN530BE1-A 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.
How to fix
- Fixed in: <UNKNOWN>
<UNKNOWN>
Technical details
A stack-based buffer overflow exists in the Settings Export CGI handler (/cgi-bin/ExportAllSettings.cgi) of Wavlink WL-WN530BE1-A firmware. The vulnerability stems from unsafe use of strcpy() when processing the HTTP_COOKIE or X-Cmd headers. An attacker can send a specially crafted request over the network to overflow the stack buffer and execute arbitrary code with router privileges.
Affected products
- Wavlink WL-WN530BE1-A 251117
Timeline
- 2026-10-13: disclosed