CVE-2022-35519
Published: 10 August 2022
Summary
CVE-2022-35519 is a critical-severity an unspecified weakness vulnerability in Wavlink Wn572Hp3 Firmware. Its CVSS base score is 9.8 (Critical).
Operationally, ranked in the top 10.0% 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-2022-35519 is a command-injection vulnerability affecting the firewall.cgi endpoint on several WAVLINK wireless router models, specifically WN572HP3, WN533A8, WN530H4, WN535G3, and WN531P3. The component fails to sanitize the add_mac parameter before processing requests that render the /cli_black_list.shtml page, allowing arbitrary command execution.
An unauthenticated attacker with network access can submit a crafted HTTP request containing shell metacharacters in the add_mac field. Successful exploitation grants the attacker the ability to execute operating-system commands with the privileges of the web server, resulting in full compromise of confidentiality, integrity, and availability on the device.
The EPSS score for this CVE reached a peak of 0.0876 after disclosure, up from a lower baseline, indicating a measurable increase in observed exploitation interest. Public technical write-ups on GitHub document the injection vector but do not reference vendor patches or official mitigation guidance.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2022-38406
Vulnerability details
WAVLINK WN572HP3, WN533A8, WN530H4, WN535G3, WN531P3 firewall.cgi has no filtering on parameter add_mac, which leads to command injection in page /cli_black_list.shtml.
- CWE(s)
Related Threats
No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.
Affected Assets
Mitigating Controls
No mitigating controls mapped yet. The per-CVE control annotator has not reached this CVE.