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CVE-2026-57273 is a high-severity stack-based buffer overflow in the GeoVision GeoWebPlayer websocket server, an add-on component used with GeoVision products such as GV-VMS and GV-Cloud and also referred to as Web Plugin or WS Player. The flaw is in the handler for the localhost-accessible connectionInfo command, which is intended to provide camera connection details. In the vulnerable handle_connection_info functionality, attacker-controlled JSON string values are copied into fixed-size stack buffers using manual byte-by-byte copy loops without proper bounds checking. The documented instance for this CVE is an overflow in the username field when no key is present. This unsafe copying can corrupt stack memory and destabilize the process, with potential for further control-flow hijacking depending on exploitability conditions.
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No public exploit code observed for this vulnerability.
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7 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A stack-based buffer overflow vulnerability in GeoVision products.
A stack-based buffer overflow vulnerability in the GeoVision GeoWebPlayer websocket server's connectionInfo/connectInfo handler, caused by copying attacker-controlled JSON strings into fixed-size buffers without length checks.
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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.