---
cve: "CVE-2026-74843"
severity: "CRITICAL"
cvss: 10.0
epss: "97%"
vendor: "WAVLINK"
kev: false
exploited: false
published: "2026-08-17 12:18:58"
tags: [cve, security, critical]
source: tsecurity.de CVE-Dossier
exported: "2026-09-02T10:24:30+02:00"
---

# CVE-2026-74843

> 10.0 CRITICAL · 🧪 PoC

## Beschreibung

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.

## CVSS-Vektor

```
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:P
```

| Metrik | Wert | Bewertung |
|---|---|---|
| AV Angriffsvektor | Netzwerk | bad |
| AC Komplexität | Gering | bad |
| PR Privilegien | Keine | bad |
| UI Interaktion | Keine | bad |

## Referenzen

- <https://vuldb.com/vuln/391205>
- <https://vuldb.com/vuln/391205/cti>
- <https://vuldb.com/cve/CVE-2026-74843>
- <https://vuldb.com/submit/875331>
- <https://github.com/wcndsb-sketch/WAVLINK_WN535M1-M35M1_V250922-Buffer-Overflow/blob/main/CVE-Report-WAVLINK-WN535M1-RCE.pdf>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-74843) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_