CVE-2026-109107: NULL Pointer Dereference in Wavlink WL-WN592AX6
Description
CVE-2026-109107 is a medium severity vulnerability in the Wavlink WL-WN592AX6 device version 250422. It involves a null pointer dereference in the /cgi-bin/upload.cgi script's main function triggered by manipulation of the Cookie argument. This flaw can be exploited remotely without authentication and requires no user interaction. Public exploit code is available. The vendor was notified early about this issue. No patch or remediation information is provided.
CVSS v4.0
Score 6.9medium
Affected software
Wavlink
WL-WN592AX6
cpe:2.3:a:wavlink:wl-wn592ax6:*:*:*:*:*:*:*:*AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability affects Wavlink WL-WN592AX6 version 250422. The issue is a null pointer dereference caused by manipulation of the Cookie argument in the main function of /cgi-bin/upload.cgi. The flaw allows remote attackers to cause a denial of service or potentially crash the device by sending crafted requests. The vulnerability has a CVSS 4.0 base score of 6.9 (medium severity) with attack vector network, low attack complexity, no privileges required, no user interaction, and limited impact on confidentiality and availability. Public exploit code exists, but no official patch or mitigation details are provided.
Potential Impact
The vulnerability allows remote attackers to cause a null pointer dereference, likely resulting in denial of service or device crash. There is no indication of privilege escalation or data disclosure. The impact is limited to availability degradation.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Since no official fix or workaround is provided, monitor vendor communications for updates. Until a patch is available, consider restricting access to the affected device's management interface to trusted networks only.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- VulDB
- Date Reserved
- 2026-10-12T08:32:50.748Z
- Cvss Version
- 4.0
- State
- PUBLISHED
Threat ID: 6acde2692cdf04f6563ccc13
Added to database: 10/13/2026, 07:48:57 UTC
Last enriched: 10/13/2026, 08:03:21 UTC
Last updated: 10/13/2026, 08:08:19 UTC
Views: 6
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