Vulnerability Description
A vulnerability was identified in Wavlink WL-NU516U1-A M16U1_V240425. The impacted element is the function sub_407504 of the file /cgi-bin/wireless.cgi of the component POST Parameter Handler. Such manipulation of the argument Guest_ssid leads to stack-based buffer overflow. The attack can be executed remotely. The exploit is publicly available and might be used. It is suggested to upgrade the affected component. The vendor was contacted early, responded in a very professional manner and quickly released a fixed version of the affected product.
CVSS Score
HIGH
Related Weaknesses (CWE)
References
- https://dl.wavlink.com/firmware/RD/WINSTAR_NU516U1-WO-A-2026-06-22-5ccde97-mt762
- https://github.com/Svigo-o/Wavlink_vul/tree/main/wavlink-wl-nu516u1-wireless-gue
- https://vuldb.com/cve/CVE-2026-13539
- https://vuldb.com/submit/834024
- https://vuldb.com/vuln/374547
- https://vuldb.com/vuln/374547/cti
FAQ
What is CVE-2026-13539?
CVE-2026-13539 is a vulnerability with a CVSS score of 8.8 (HIGH). A vulnerability was identified in Wavlink WL-NU516U1-A M16U1_V240425. The impacted element is the function sub_407504 of the file /cgi-bin/wireless.cgi of the component POST Parameter Handler. Such ma...
How severe is CVE-2026-13539?
CVE-2026-13539 has been rated HIGH with a CVSS base score of 8.8/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-13539?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.