CVE-2026-18590— Wavlink WL-NU516U1 Admin Password adm.cgi set_sys_adm os command injection
Possible ATT&CK Techniques 2AI
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I. Basic Information for CVE-2026-18590
Vulnerability Information
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Vulnerability Title
Wavlink WL-NU516U1 Admin Password adm.cgi set_sys_adm os command injection
Source: CVE Program / CVE List V5
Vulnerability Description
A vulnerability was determined in Wavlink WL-NU516U1 708c073-mt7628. Affected is the function set_sys_adm of the file adm.cgi of the component Admin Password Handler. This manipulation causes os command injection. The attack is possible to be carried out remotely. The exploit has been publicly disclosed and may be utilized. It is suggested to 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:L/UI:N/S:U/C:L/I:L/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
OS命令中使用的特殊元素转义处理不恰当(OS命令注入)
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-2026-18590
| # | POC Description | Source Link | Shenlong Link |
|---|
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Security Blog Posts for CVE-2026-18590 (1)
- 🔗 Page not found · GitHub · GitHubbroken-link
Same Patch Batch · Wavlink · 2026-08-03 · 4 CVEs total
| CVE-2026-18589 | 9.8 CRITICAL | Wavlink WL-NU516U1 nas.cgi change_password stack-based overflow |
| CVE-2026-18588 | 9.8 CRITICAL | Wavlink WL-NU516U1 nas.cgi fgets stack-based overflow |
| CVE-2026-18587 | 7.5 HIGH | Wavlink WL-NU516U1 Config Import os command injection |
IV. Related Vulnerabilities
Same product: WL-NU516U1
- CVE-2026-18589
Wavlink WL-NU516U1 nas.cgi change_password stack-based overf - CVE-2026-18588
Wavlink WL-NU516U1 nas.cgi fgets stack-based overflow - 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-2026-18589
Wavlink WL-NU516U1 nas.cgi change_password stack-based overf - CVE-2026-18588
Wavlink WL-NU516U1 nas.cgi fgets stack-based overflow - 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-2026-13539
Wavlink WL-NU516U1-A POST Parameter wireless.cgi sub_407504
Same weakness: CWE-78
- CVE-2026-67608
Telenia TVox 26.5.3 OS Command Injection via action_audio.ph - CVE-2026-69096
OpenWrt luci-app-dockerman Read ACL Remote Code Execution - CVE-2026-18587
Wavlink WL-NU516U1 Config Import os command injection - CVE-2026-67324
GitPython 3.1.50 Authentication Bypass via Joined Short Opti - CVE-2026-67308
Wazuh GitHub Actions Shell Injection via Fork Pull Request
V. Comments for CVE-2026-18590
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