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CVE-2026-4861

HIGH

8.8

Description

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 initiated remotely. The exploit has been made available to the public and could be used for attacks. The vendor was contacted early about this disclosure but did not respond in any way.

CVE Details

CVSS v3.1 Score8.8

SeverityHIGH

CVSS VectorCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Attack VectorNETWORK

ComplexityLOW

Privileges RequiredLOW

User InteractionNONE

Published3/26/2026

Last Modified3/30/2026

Sourcenvd

Honeypot Sightings0

Weaknesses (CWE)

CWE-119CWE-121

References

https://github.com/Wlz1112/WAVLINK-NU516U1-V260227/blob/main/Content-Length.md(cna@vuldb.com)

https://vuldb.com/?ctiid.353192(cna@vuldb.com)

https://vuldb.com/?id.353192(cna@vuldb.com)

https://vuldb.com/?submit.776217(cna@vuldb.com)

IOC Correlations

No correlations recorded

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