CVE-2026-4861 - Vulnerability Analysis

Overview

Wavlink WL-NU516U1 260227 contains a stack-based buffer overflow caused by manipulation of the Content-Length argument in /cgi-bin/nas.cgi, letting remote attackers execute arbitrary code, exploit requires crafted request.

Severity & Score

Impact

Remote attackers can execute arbitrary code, potentially leading to full system compromise.

Mitigation

Update to the latest version or apply vendor patches when available.

References

• https://github.com/Wlz1112/WAVLINK-NU516U1-V260227/blob/main/Content-Length.md
• https://vuldb.com/?ctiid.353192
• https://vuldb.com/?id.353192
• https://vuldb.com/?submit.776217

Social Media Activity(1 post)

TheHackerWire

@thehackerwire

Mar 26, 2026

🟠 CVE-2026-4861 - High (8.8) A weakness has been identified in Wavlink WL-NU516U1 260227. This vulnerability affects the function ftext of the file /cgi-bin/nas.cgi. This manipulation of the argument Content-Length causes stack-based buffer overflow. The attack can be initiat... 🔗 https://www.thehackerwire.com/vulnerability/CVE-2026-4861/ #CVE #vulnerability #infosec #cybersecurity #security #Tenda #patchstack

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Related Resources

• Vulnerability Intelligence Dashboard
• Credential Scanner