CVE-2026-5043 is a remotely exploitable stack-based buffer overflow affecting Belkin F9K1122 firmware version 1.00.33. The flaw is in the formSetPassword function exposed via the /goform/formSetPassword endpoint in the device's Parameter Handler component. According to the provided content, the vulnerability is triggered by manipulation of the webpage argument, which can cause out-of-bounds writes on the stack. Public exploit information is available. The content also indicates the vendor was contacted prior to disclosure but did not respond.
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What an attacker gets, and what they’ve been doing with it.
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No public exploit code observed for this vulnerability.
Products and vendors Mallory has correlated with this vulnerability. Open in Mallory to drill down to specific CPE configurations and version ranges.
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6 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
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Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
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Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.