Is there a public PoC exploit available for CVE-2026-7690?

Yes, a public proof-of-concept exploit is available for CVE-2026-7690. Prioritise patching immediately. EPSS: 0.8%.

Wavlink WL-WN570HA1 CVE-2026-7690

Q: What is the CVSS score of CVE-2026-7690?

CVE-2026-7690 has a CVSS 4.0 base score of 2.1 (Low). CVSS vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/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. EPSS exploitation probability: 0.8%.

EUVD-2026-26829 LOW

Command Injection (CWE-77)

2026-05-03 VulDB

Command Injection Wl Wn570Ha1

2.1

CVSS 4.0 · NVD

Severity by source

NVD PRIMARY

2.1 LOW

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/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

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/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

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Lifecycle Timeline

Analysis Generated

May 03, 2026 - 10:45 vuln.today

Severity Changed

May 03, 2026 - 10:22 NVD

MEDIUM LOW

CVSS changed

May 03, 2026 - 10:22 NVD

6.3 (MEDIUM) 2.1 (LOW)

PoC Detected

May 03, 2026 - 10:16 vuln.today

Public exploit code

EUVD ID Assigned

May 03, 2026 - 10:15 euvd

EUVD-2026-26829

Analysis Generated

May 03, 2026 - 10:15 vuln.today

CVE Published

May 03, 2026 - 09:45 nvd

LOW 2.1

DescriptionCVE.org

A weakness has been identified in Wavlink WL-WN570HA1 R70HA1 V1410_221110. This issue affects the function set_sys_adm of the file /cgi-bin/adm.cgi. This manipulation of the argument Username causes command injection. It is possible to initiate the attack remotely. The exploit has been made available to the public and could be used for attacks. Once again the vendors acted very professional and confirms, "that the WN570HA1 firmware version R70HA1 V1410_221110 has been removed from our website." This vulnerability only affects products that are no longer supported by the maintainer.

AnalysisAI

Command injection in Wavlink WL-WN570HA1 firmware R70HA1 V1410_221110 allows authenticated remote attackers to execute arbitrary commands via the Username parameter in the set_sys_adm function of /cgi-bin/adm.cgi. Publicly available exploit code exists for this vulnerability affecting end-of-life hardware no longer supported by the vendor.

Technical ContextAI

The vulnerability resides in the administrative CGI interface (/cgi-bin/adm.cgi) of the Wavlink WL-WN570HA1 wireless router. The set_sys_adm function fails to properly sanitize the Username parameter before passing it to a system command, enabling OS command injection (CWE-77). This is a classic shell metacharacter injection flaw where user-supplied input is concatenated into a system call without validation or escaping. The affected firmware version R70HA1 V1410_221110 has been officially removed from Wavlink's support lifecycle.

RemediationAI

Primary remediation is to discontinue use of Wavlink WL-WN570HA1 firmware R70HA1 V1410_221110 and migrate to a current vendor-supported model or firmware version if available. No vendor-released patch is available for this end-of-life firmware. For organizations unable to immediately replace affected devices, implement compensating controls: restrict network access to the administrative CGI interface (/cgi-bin/adm.cgi) via firewall rules to allow only trusted administrator IP addresses; disable remote management or change default/weak administrative credentials immediately to prevent unauthorized authentication; apply WAF (Web Application Firewall) rules to block requests containing shell metacharacters (|, ;, &, `, $, etc.) in the Username parameter if network-level filtering is in place. These controls mitigate but do not eliminate the risk - full remediation requires hardware/firmware replacement.