TI-2026-52574 Aliases CVE-2026-74843 GHSA-p9ff-qq24-ccr6

Wavlink WN531P3/WN535M1 Export Pingortrace CGI export_pingortrace.cgi strcpy stack-based overflow

MEDIUM 51CWE-119Published 2026-08-17 · Updated 2026-08-17

Key facts

Attack vector: Network
Privileges required: None
User interaction: None
Attack complexity: Low
Attack requirements: None
Impact type: Code execution
Confidentiality · integrity · availability: High · High · High
Fix status: No fix listed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-119 and the CVSS impact.

Summary

A vulnerability was determined in Wavlink WN531P3 and WN535M1 V250922. Affected by this vulnerability is the function strcpy of the file /etc/lighttpd/www/cgi-bin/export_pingortrace.cgi of the component Export Pingortrace CGI. Executing a manipulation of the argument HTTP_COOKIE can lead to stack-based buffer overflow. The attack may be launched remotely. The exploit has been publicly disclosed and may be utilized. The vendor was contacted early about this disclosure.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.01038 64th percentileScored 2026-11-07

Public exploit Yes 1 exploit referenceTagged by the CNA

Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
Automatable: Yes
Technical impact: Total

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	WN531P3	V250922	—	No fix listed	CNA
Wavlink	WN535M1	V250922	—	No fix listed	CNA

WN531P3 VendorWavlink Affected V250922 Fixed in — No fix listed CNA
WN535M1 VendorWavlink Affected V250922 Fixed in — No fix listed CNA

CPE names CNA · 2

CPE	Versions	Role	Vendor
cpe:2.3:a:wavlink:wn531p3::::::::	—	—	Wavlink
cpe:2.3:a:wavlink:wn535m1::::::::	—	—	Wavlink

cpe:2.3:a:wavlink:wn531p3:*:*:*:*:*:*:*:* Versions — — ·Wavlink
cpe:2.3:a:wavlink:wn535m1:*:*:*:*:*:*:*:* Versions — — ·Wavlink

Remediation

No fixed version listed by the sources yet.

Timeline

2026-10-02 Threatist record created from CVE-2026-74843
2026-10-03 Alias added: GHSA-p9ff-qq24-ccr6

References

Exploit 1

https://github.com/wcndsb-sketch/WAVLINK_WN535M1-M35M1_V250922-Buffer-Overflow/blob/main/CVE-Report-WAVLINK-WN535M1-RCE.pdf

TI-2022-02298 WAVLINK WN535K2/WN535K3 nightled.cgi os command injection CVSS 3.1CRITICAL 9.8
TI-2026-83752 OS command injection in WAVLINK WN551X3-A DNS resolution handler CVSS 4.0CRITICAL 10.0
TI-2026-83751 WAVLINK WN551X3-A WireGuard CLI Group ioos os command injection CVSS 4.0CRITICAL 10.0
TI-2026-83668 Stack-based overflow in WAVLINK WN536AX6-A OpenVPN handler CVSS 4.0CRITICAL 10.0
TI-2026-83667 OS command injection in WAVLINK WN536AX6-A WireGuard handler CVSS 4.0CRITICAL 10.0
TI-2026-83666 OS command injection in WAVLINK WN536AX6-A openvpn_cli handler CVSS 4.0CRITICAL 10.0

See all 248 →

Sources

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