CVE-2026-18588— Wavlink WL-NU516U1 nas.cgi fgets stack-based overflow
Possible ATT&CK Techniques 2AI
T1203 · Exploitation for Client Execution T1190 · Exploit Public-Facing ApplicationAffected Version Matrix 1
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Wavlink | WL-NU516U1 | 708c073-mt7628 | affected |
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I. Basic Information for CVE-2026-18588
Vulnerability Information
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Vulnerability Title
Wavlink WL-NU516U1 nas.cgi fgets stack-based overflow
Source: CVE Program / CVE List V5
Vulnerability Description
A vulnerability has been found in Wavlink WL-NU516U1 708c073-mt7628. This affects the function fgets of the file nas.cgi. The manipulation of the argument CONTENT_LENGTH leads to stack-based buffer overflow. Remote exploitation of the attack is possible. You should upgrade the affected component. The vendor was contacted early, responded in a very professional manner and quickly released a fixed version of the affected product.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
栈缓冲区溢出
Source: CVE Program / CVE List V5
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| Wavlink | WL-NU516U1 | 708c073-mt7628 | cpe:2.3:o:wavlink:wl-nu516u1_firmware:*:*:*:*:*:*:*:* |
II. Public POCs for CVE-2026-18588
| # | POC Description | Source Link | Shenlong Link |
|---|
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Security Blog Posts for CVE-2026-18588 (1)
- 🔗 Page not found · GitHub · GitHubbroken-link
Same Patch Batch · Wavlink · 2026-08-03 · 5 CVEs total
| CVE-2026-18589 | 9.8 CRITICAL | Wavlink WL-NU516U1 nas.cgi change_password stack-based overflow |
| CVE-2026-18607 | 8.8 HIGH | Wavlink NU516 lighttpd upload.cgi strcpy stack-based overflow |
| CVE-2026-18587 | 7.5 HIGH | Wavlink WL-NU516U1 Config Import os command injection |
| CVE-2026-18590 | 6.3 MEDIUM | Wavlink WL-NU516U1 Admin Password adm.cgi set_sys_adm os command injection |
IV. Related Vulnerabilities
Same product: WL-NU516U1
- CVE-2026-18590
Wavlink WL-NU516U1 Admin Password adm.cgi set_sys_adm os com - CVE-2026-18589
Wavlink WL-NU516U1 nas.cgi change_password stack-based overf - CVE-2026-18587
Wavlink WL-NU516U1 Config Import os command injection - CVE-2026-15513
Wavlink WL-NU516U1 adm.cgi wlink_uci_set_value os command in - CVE-2026-4861
Wavlink WL-NU516U1 nas.cgi ftext stack-based overflow
Same vendor: Wavlink
- CVE-2026-18607
Wavlink NU516 lighttpd upload.cgi strcpy stack-based overflo - CVE-2026-18590
Wavlink WL-NU516U1 Admin Password adm.cgi set_sys_adm os com - CVE-2026-18589
Wavlink WL-NU516U1 nas.cgi change_password stack-based overf - CVE-2026-18587
Wavlink WL-NU516U1 Config Import os command injection - CVE-2026-15513
Wavlink WL-NU516U1 adm.cgi wlink_uci_set_value os command in
Same weakness: CWE-121
- CVE-2026-49435
Keysight IxChariot-related products stack-based buffer overf - CVE-2017-20242
Keysight IxChariot Endpoint stack-based buffer overflow - CVE-2026-25289
Stack-based Buffer Overflow in WLAN Firmware - CVE-2026-10710
FBX ExtractDrive Stack-Based Buffer Overflow Vulnerability i - CVE-2026-10709
FBX BinaryReadSectionHeader Stack-Based Buffer Overflow Vuln
V. Comments for CVE-2026-18588
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