TI-2026-03207 Aliases CVE-2026-3716 GHSA-hf5c-9m3r-mqv2

Wavlink WL-WN579X3-C adm.cgi sub_401AD4 cross site scripting

MEDIUM 55CWE-79Published 2026-03-08 · Updated 2026-03-11

Key facts

Attack vector: Network
Privileges required: High
User interaction: Passive
Attack complexity: Low
Attack requirements: None
Impact type: Cross-site scripting, Code execution
Confidentiality · integrity · availability: None · Low · None
Fix status: Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-79 and CWE-94.

Summary

A vulnerability was determined in Wavlink WL-WN579X3-C 231124. This vulnerability affects the function sub_401AD4 of the file /cgi-bin/adm.cgi. Executing a manipulation of the argument Hostname can lead to cross site scripting. It is possible to launch the attack remotely. The exploit has been publicly disclosed and may be utilized. Upgrading to version 20260226 is able to resolve this issue. The affected component should be upgraded. The vendor was contacted early, responded in a very professional manner and quickly released a fixed version of the affected product.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV

EPSS 0.00266 18th percentileScored 2026-11-07

Public exploit Yes 1 exploit referenceTagged by the CNA and NVD

Fix Fixed WL-WN579X3-C (Wavlink): 20260226

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: Poc
Automatable: No
Technical impact: Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
Wavlink	WL-WN579X3-C	231124	20260226	Patch available	CNA

WL-WN579X3-C VendorWavlink Affected 231124 Fixed in 20260226 Patch available CNA

CPE configurations NVD · 2

CPE	Versions	Role	Vendor
cpe:2.3:o:wavlink:wl-wn579x3-c_firmware:231124:::::::*	231124	Vulnerable	Wavlink
cpe:2.3:h:wavlink:wl-wn579x3-c:-:::::::*	not specified by NVD	Running on	Wavlink

cpe:2.3:o:wavlink:wl-wn579x3-c_firmware:231124:*:*:*:*:*:*:* Versions 231124 Vulnerable ·Wavlink
cpe:2.3:h:wavlink:wl-wn579x3-c:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Wavlink

Remediation

Fix · CNA WL-WN579X3-C (Wavlink) Fixed in 20260226

Timeline

2026-10-02 Threatist record created from CVE-2026-3716
2026-10-03 Alias added: GHSA-hf5c-9m3r-mqv2

References

Exploit 1

https://github.com/Litengzheng/vul_db/blob/main/WL-WN579X3-C/vul_18/README.md

Patch 1

https://dl.wavlink.com/firmware/RD/WN579X3C_WAVLINK_V20260226_WO_cb3003b2.bin

TI-2026-04364 Wavlink WL-WN579X3-C UPNP firewall.cgi sub_4019FC stack-based overflow CVSS 4.0HIGH 8.7
TI-2026-03206 Wavlink WL-WN579X3-C firewall.cgi sub_40139C stack-based overflow CVSS 4.0HIGH 8.7

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences