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CVE-2026-3715

Wavlink WL-WN579X3-C firewall.cgi sub_40139C stack-based overflow

Published: Mar 8, 2026Updated: Mar 10, 2026 Sources: CVE List NVDCWE-119
8.8HIGH
NVD MITRE
EPSS Score
0.7%
Top 53.5%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
No Fix Available

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.

No summary for this CVE yet.

CVSS Vector Breakdown

AV:NAC:LPR:LUI:NS:UC:HI:HA:H
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:LPrivileges Required
Low
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:HConfidentiality
High
I:HIntegrity
High
A:HAvailability
High
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Weaknesses

CWE-119CWE-121

Affected Products

WL-WN579X3-CWavlinkNetworking Infrastructure
wl-wn579x3-c firmwarewavlinkNetworking Infrastructure
wavlinkcommercialCNNetworking Infrastructureaka wavlink

Exploitability

No known exploits, KEV entries, or remediation guidance available for this vulnerability yet.
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Attack Graph

Products CVE Techniques Tactics

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MITRE ATT&CK

2 techniques
Initial Access
Privilege Escalation
View detailed technique mapping

References

https://vuldb.com/?id.349660
vuldb.com
https://vuldb.com/?ctiid.349660
vuldb.com
https://vuldb.com/?submit.765325
vuldb.com
and 2 more references View all →

Timeline

Published
Mar 8, 2026
Last Updated
Mar 10, 2026

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