CVE-2026-44387 in WAB-M1775-PS
Summary
by MITRE • 07/28/2026
ELECOM wireless LAN routers and access points devices contain a reflected cross-site scripting vulnerability in WebUI. If this vulnerability is exploited, an arbitrary script may be executed on a logged-in user's web browser.
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Analysis
by VulDB Data Team • 07/28/2026
This vulnerability represents a critical security flaw in ELECOM wireless LAN routers and access points that fall under the category of reflected cross-site scripting attacks. The weakness exists within the web-based management interface of these networking devices, creating an avenue for malicious actors to inject and execute arbitrary JavaScript code within the context of a logged-in user's browser session. Such vulnerabilities are classified as CWE-79 by the Common Weakness Enumeration catalog, which specifically addresses cross-site scripting flaws that occur when user-provided data is immediately returned to the user without proper sanitization or encoding.
The technical implementation of this vulnerability stems from insufficient input validation and output encoding within the web interface components of these networking devices. When legitimate users interact with the router's management portal, any maliciously crafted input parameters passed through HTTP requests can be reflected back to the user's browser without adequate sanitization. This allows attackers to craft specially formatted URLs or manipulate form inputs that when submitted trigger the execution of malicious scripts in the victim's browser context. The attack typically requires social engineering to convince a legitimate user to click on a malicious link, as the vulnerability itself does not permit remote code execution on the device itself but rather targets the user's browser session.
The operational impact of this vulnerability extends beyond simple script execution, as it can enable more sophisticated attacks through the exploitation of the user's authenticated session within the router management interface. An attacker who successfully tricks a user into executing malicious JavaScript code could potentially access sensitive configuration data, modify network settings, or even escalate privileges to gain deeper control over the device. This represents a significant risk in enterprise environments where these devices are commonly used for network infrastructure management. The vulnerability aligns with ATT&CK technique T1566.001 which covers spearphishing attachments, as the attack vector typically involves tricking users into interacting with malicious content through carefully crafted web requests.
Mitigation strategies for this vulnerability should include immediate firmware updates from ELECOM to address the reflected XSS flaw, alongside network segmentation and access controls that limit direct exposure of these management interfaces to untrusted networks. Organizations should implement proper input validation measures at the application level and ensure that all user-supplied data is properly encoded before being returned to browsers. Network administrators should also consider implementing web application firewalls to detect and prevent malicious requests targeting these interfaces, while conducting regular security assessments to identify similar vulnerabilities across their networking infrastructure. The implementation of Content Security Policy headers can provide additional protection layers against script execution, though this requires careful configuration to avoid breaking legitimate functionality within the device's management interface.