CVE-2026-4861

HIGH 8.8

Wavlink WL-NU516U1 nas.cgi ftext stack-based overflow

CVSS Score

8.8

EPSS Score

0.0%

EPSS Percentile

13th

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.

CWE	CWE-121 CWE-119
Vendor	wavlink
Product	wl-nu516u1
Published	Mar 26, 2026
Last Updated	Mar 26, 2026

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CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:X/RC:R

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Scope

Confidentiality

Integrity

Availability

Affected Versions

Wavlink / WL-NU516U1

260227

References

NVD ↗ CVE.org ↗ EPSS Data ↗

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

Credits

🔍 haimianbaobao (VulDB User) VulDB