CVE-2026-28525

CVE-2026-28525 · SWUpdate Integer Underflow in Multipart Upload Parser

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SWUpdate contains an integer underflow vulnerability in the multipart upload parser in mongoose_multipart.c that allows unauthenticated attackers to cause a denial of service by sending a crafted HTTP POST request to /upload with a malformed multipart boundary and controlled TCP stream timing. Attackers can trigger an integer underflow in the mg_http_multipart_continue_wait_for_chunk() function when the buffer length falls within a specific range, causing an out-of-bounds heap read past the allocated receive buffer to a local IPC socket.

CVSS 8.2 · Élevée · EPSS 0,3% · Correctif disponible

Publication

2026-04-23T20:59:31.492Z

Mise à jour

2026-07-28T01:48:29.666Z

Pile logicielle: system

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