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CVE-2026-74843

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

Published: Aug 17, 2026Updated: Aug 20, 2026 Sources: CVE List NVDCWE-119
10.0CRITICAL
NVD MITRE
EPSS Score
0.6%
Top 54.2%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
No Fix Available
Self-Check
Not available

Description

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.

No summary for this CVE yet.

CVSS Vector Breakdown

AV:NAC:LPR:NUI:NS:CC:HI:HA:H
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:CScope
Changed
Impact
C:HConfidentiality
High
I:HIntegrity
High
A:HAvailability
High
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Weaknesses

CWE-119CWE-121

Affected Products

Wavlink
commercial·CN
WN531P3Embedded
Networking Infrastructure / router-switch
WN535M1Embedded
Networking Infrastructure / router-switch

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://github.com/wcndsb-sketch/WAVLINK_WN535M1-M35M1_V250922-Buffer-Overflow/blob/main/CVE-Report-WAVLINK-WN535M1-RCE.pdf
github.com
https://vuldb.com/cve/CVE-2026-74843
vuldb.com
https://vuldb.com/submit/875331
vuldb.com
and 2 more references View all →

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