CVE-2026-18607
Wavlink NU516 lighttpd upload.cgi strcpy stack-based overflow
Description
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.
INFO
Published Date :
Aug. 3, 2026, 5:16 p.m.
Last Modified :
Aug. 3, 2026, 5:16 p.m.
Remotely Exploit :
Yes !
Source :
[email protected]
Affected Products
The following products are affected by CVE-2026-18607
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
No affected product recoded yet
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 2.0 | HIGH | [email protected] | ||||
| CVSS 3.1 | HIGH | [email protected] | ||||
| CVSS 4.0 | HIGH | [email protected] |
Solution
- Update firmware on affected Wavlink devices.
- Apply vendor-released patches for lighttpd.
- Disable or restrict file upload functionality.
- Monitor network for suspicious activity.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-18607.
| URL | Resource |
|---|---|
| https://github.com/0xcc12138/WAVLINK-vul | |
| https://vuldb.com/cve/CVE-2026-18607 | |
| https://vuldb.com/submit/852637 | |
| https://vuldb.com/vuln/385530 | |
| https://vuldb.com/vuln/385530/cti |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-18607 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-18607
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-18607 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-18607 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
New CVE Received by [email protected]
Aug. 03, 2026
Action Type Old Value New Value Added Affected [{'cpes': ['cpe:2.3:a:wavlink:wn572:*:*:*:*:*:*:*:*'], 'vendor': 'Wavlink', 'modules': ['lighttpd'], 'product': 'WN572', 'versions': [{'status': 'affected', 'version': '20260609'}]}, {'cpes': ['cpe:2.3:a:wavlink:wn570h:*:*:*:*:*:*:*:*'], 'vendor': 'Wavlink', 'modules': ['lighttpd'], 'product': 'WN570H', 'versions': [{'status': 'affected', 'version': '20260609'}]}, {'cpes': ['cpe:2.3:a:wavlink:wn573:*:*:*:*:*:*:*:*'], 'vendor': 'Wavlink', 'modules': ['lighttpd'], 'product': 'WN573', 'versions': [{'status': 'affected', 'version': '20260609'}]}, {'cpes': ['cpe:2.3:a:wavlink:wn529:*:*:*:*:*:*:*:*'], 'vendor': 'Wavlink', 'modules': ['lighttpd'], 'product': 'WN529', 'versions': [{'status': 'affected', 'version': '20260609'}]}, {'cpes': ['cpe:2.3:a:wavlink:wn530:*:*:*:*:*:*:*:*'], 'vendor': 'Wavlink', 'modules': ['lighttpd'], 'product': 'WN530', 'versions': [{'status': 'affected', 'version': '20260609'}]}, {'cpes': ['cpe:2.3:a:wavlink:wn531:*:*:*:*:*:*:*:*'], 'vendor': 'Wavlink', 'modules': ['lighttpd'], 'product': 'WN531', 'versions': [{'status': 'affected', 'version': '20260609'}]}, {'cpes': ['cpe:2.3:a:wavlink:wn535:*:*:*:*:*:*:*:*'], 'vendor': 'Wavlink', 'modules': ['lighttpd'], 'product': 'WN535', 'versions': [{'status': 'affected', 'version': '20260609'}]}, {'cpes': ['cpe:2.3:a:wavlink:etc._wn529:*:*:*:*:*:*:*:*'], 'vendor': 'Wavlink', 'modules': ['lighttpd'], 'product': 'etc. WN529', 'versions': [{'status': 'affected', 'version': '20260609'}]}, {'cpes': ['cpe:2.3:a:wavlink:wn530:*:*:*:*:*:*:*:*'], 'vendor': 'Wavlink', 'modules': ['lighttpd'], 'product': 'WN530', 'versions': [{'status': 'affected', 'version': '20260609'}]}, {'cpes': ['cpe:2.3:a:wavlink:wn531:*:*:*:*:*:*:*:*'], 'vendor': 'Wavlink', 'modules': ['lighttpd'], 'product': 'WN531', 'versions': [{'status': 'affected', 'version': '20260609'}]}, {'cpes': ['cpe:2.3:a:wavlink:wn535:*:*:*:*:*:*:*:*'], 'vendor': 'Wavlink', 'modules': ['lighttpd'], 'product': 'WN535', 'versions': [{'status': 'affected', 'version': '20260609'}]}, {'cpes': ['cpe:2.3:a:wavlink:wn536:*:*:*:*:*:*:*:*'], 'vendor': 'Wavlink', 'modules': ['lighttpd'], 'product': 'WN536', 'versions': [{'status': 'affected', 'version': '20260609'}]}, {'cpes': ['cpe:2.3:a:wavlink:wn551:*:*:*:*:*:*:*:*'], 'vendor': 'Wavlink', 'modules': ['lighttpd'], 'product': 'WN551', 'versions': [{'status': 'affected', 'version': '20260609'}]}, {'cpes': ['cpe:2.3:a:wavlink:wn557:*:*:*:*:*:*:*:*'], 'vendor': 'Wavlink', 'modules': ['lighttpd'], 'product': 'WN557', 'versions': [{'status': 'affected', 'version': '20260609'}]}, {'cpes': ['cpe:2.3:a:wavlink:nu516:*:*:*:*:*:*:*:*'], 'vendor': 'Wavlink', 'modules': ['lighttpd'], 'product': 'NU516', 'versions': [{'status': 'affected', 'version': '20260609'}]}] Added Description 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. Added CVSS V4.0 AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X Added CVSS V3.1 AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Added CVSS V2 (AV:N/AC:L/Au:S/C:C/I:C/A:C) Added CWE CWE-119 Added CWE CWE-121 Added Reference https://github.com/0xcc12138/WAVLINK-vul Added Reference https://vuldb.com/cve/CVE-2026-18607 Added Reference https://vuldb.com/submit/852637 Added Reference https://vuldb.com/vuln/385530 Added Reference https://vuldb.com/vuln/385530/cti