Buffer overflow in Wavlink Etc. Wn529
CVE-2026-18607
A security vulnerability has been detected in Wavlink WN572, WN570H, WN573, WN529, WN530, WN531, WN535, etc. WN529, WN530, WN531, WN535, WN536, WN551, WN557 and NU516 up to 20260609. Affected by this issue is the function strcpy of the file upload.cgi of the component lighttpd. The manipulation of the argument HTTP_COOKIE leads to stack-based buffer overflow. It is possible to initiate the attack remotely. The exploit has been disclosed publicly and may be used.
Vulnerability class: Buffer Overflow
EPSS: 0.004 (37.3th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
Affected products
- Wavlink Etc. Wn529 — versions 20260609
- Wavlink Nu516 — versions 20260609
- Wavlink Wn529 — versions 20260609
- Wavlink Wn530 — versions 20260609
- Wavlink Wn531 — versions 20260609
- Wavlink Wn535 — versions 20260609
- Wavlink Wn536 — versions 20260609
- Wavlink Wn551 — versions 20260609
- Wavlink Wn557 — versions 20260609
- Wavlink Wn570h — versions 20260609
Weakness classification (CWE)
References
- cna@vuldb.com (exploit)
- cna@vuldb.com (third-party-advisory)
- cna@vuldb.com (third-party-advisory)
- cna@vuldb.com (technical-description, vdb-entry)
- cna@vuldb.com (signature, permissions-required)
Frequently asked questions
- What is CVE-2026-18607?
- CVE-2026-18607 is a high-severity vulnerability in Wavlink Etc. Wn529, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 8.8/10. Published 2026-08-03.
- How severe is CVE-2026-18607?
- High severity. CVSS v3 base score is 8.8 out of 10.