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.
References (5)
Core 5
Core References
Permissions Required, VDB Entry vdb-entry
technical-description
https://vuldb.com/?id.349660
Permissions Required, VDB Entry signature
permissions-required
https://vuldb.com/?ctiid.349660
Permissions Required, VDB Entry third-party-advisory
https://vuldb.com/?submit.765325
Third Party Advisory exploit
https://github.com/Litengzheng/vul_db/blob/main/WL-WN579X3-C/vul_17/README.md
Various Sources patch
https://dl.wavlink.com/firmware/RD/WN579X3C_WAVLINK_V20260226_WO_cb3003b2.bin
Scores
CVSS v3
8.8
EPSS
0.0066
EPSS Percentile
46.4%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CISA SSVC
Vulnrichment
Exploitation
poc
Automatable
no
Technical Impact
total
Details
CWE
CWE-119
CWE-121
Status
published
Products (1)
wavlink/wl-wn579x3-c_firmware
231124
Published
Mar 08, 2026
Tracked Since
Mar 08, 2026