A vulnerability was found in Wavlink WL-WN579X3-C 231124. This affects the function sub_40139C of the file /cgi-bin/firewall.cgi. Performing a manipulation of the argument del_flag results in stack-based buffer overflow. It is possible to initiate the attack remotely. The exploit has been made public and could be used. Upgrading to version 20260226 is able to mitigate this issue. You should 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.

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Fixes

Solution

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Workaround

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History

Wed, 11 Mar 2026 15:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Tue, 10 Mar 2026 19:00:00 +0000

Type Values Removed Values Added
First Time appeared Wavlink wl-wn579x3-c Firmware
CPEs cpe:2.3:h:wavlink:wl-wn579x3-c:-:*:*:*:*:*:*:*
cpe:2.3:o:wavlink:wl-wn579x3-c_firmware:231124:*:*:*:*:*:*:*
Vendors & Products Wavlink wl-wn579x3-c Firmware

Mon, 09 Mar 2026 10:15:00 +0000

Type Values Removed Values Added
First Time appeared Wavlink
Wavlink wl-wn579x3-c
Vendors & Products Wavlink
Wavlink wl-wn579x3-c

Sun, 08 Mar 2026 06:45:00 +0000

Type Values Removed Values Added
Description A vulnerability was found in Wavlink WL-WN579X3-C 231124. This affects the function sub_40139C of the file /cgi-bin/firewall.cgi. Performing a manipulation of the argument del_flag results in stack-based buffer overflow. It is possible to initiate the attack remotely. The exploit has been made public and could be used. Upgrading to version 20260226 is able to mitigate this issue. You should 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.
Title Wavlink WL-WN579X3-C firewall.cgi sub_40139C stack-based overflow
Weaknesses CWE-119
CWE-121
References
Metrics cvssV2_0

{'score': 9, 'vector': 'AV:N/AC:L/Au:S/C:C/I:C/A:C/E:POC/RL:OF/RC:C'}

cvssV3_0

{'score': 8.8, 'vector': 'CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C'}

cvssV3_1

{'score': 8.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C'}

cvssV4_0

{'score': 8.7, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P'}


Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: VulDB

Published:

Updated: 2026-03-11T13:48:43.677Z

Reserved: 2026-03-07T11:03:30.268Z

Link: CVE-2026-3715

cve-icon Vulnrichment

Updated: 2026-03-11T13:48:35.639Z

cve-icon NVD

Status : Analyzed

Published: 2026-03-08T07:16:13.543

Modified: 2026-03-10T18:55:03.883

Link: CVE-2026-3715

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-03-09T10:03:28Z

Weaknesses