CVE-2022-30489
Published: 13 May 2022
Summary
CVE-2022-30489 is a medium-severity Cross-site Scripting (CWE-79) vulnerability in Wavlink Wn535G3 Firmware. Its CVSS base score is 6.1 (Medium).
Operationally, ranked in the top 3.3% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.
Deeper analysis
CVE-2022-30489 is a reflected cross-site scripting vulnerability (CWE-79) present in the WAVLINK WN535 G3 router. The flaw occurs because the hostname parameter supplied to /cgi-bin/login.cgi is not sanitized before being included in the HTTP response, allowing arbitrary script to be injected.
An unauthenticated remote attacker can trigger the issue by crafting a URL containing a malicious hostname value and inducing a victim to visit it. Successful exploitation yields limited confidentiality and integrity impact within the victim's browser session, as reflected by the CVSS vector AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.
Public references consist solely of GitHub repositories containing proof-of-concept code; no vendor advisories, patches, or mitigation guidance are provided. The associated EPSS score has remained stable near 0.29 with negligible movement between its recorded peak and current value.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2022-52363
Vulnerability details
WAVLINK WN535 G3 was discovered to contain a cross-site scripting (XSS) vulnerability via the hostname parameter at /cgi-bin/login.cgi.
- CWE(s)
Related Threats
No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.
Affected Assets
Mitigating Controls
Likely Mitigating Controls AI
Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.
Penetration testing submits XSS payloads to web applications, detecting cross-site scripting flaws for subsequent remediation.
Validates web inputs to reject script-related content that could produce XSS.
Output validation against expected content can reject or sanitize script content in generated web pages, reducing XSS exploitability.