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CVE-2024-9644 affects the Four-Faith F3x36 industrial router running firmware v2.0.0. The vulnerability is an authentication bypass in the administrative web server caused by authentication not being enforced for certain administrative functionality when requests are sent to the "bapply.cgi" endpoint instead of the normal "apply.cgi" endpoint. As a result, a remote unauthenticated attacker can invoke administrative actions without first authenticating, allowing unauthorized modification of router settings. The available reporting also notes that this issue can be chained with other vulnerabilities that normally require authentication, potentially enabling more severe post-authentication attack paths.
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No public exploit code observed for this vulnerability.
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3 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A vulnerability in Four Faith routers, exploited by the frost malware.
Critical authentication bypass in the Four-Faith F3x36 router "bapply.cgi" endpoint due to missing/insufficient access controls, allowing remote attackers to change router settings and potentially chain with other flaws for more severe compromise (including RCE).
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.