A vulnerability was found in warmcat libwebsockets 4.5.0. Impacted is the function report_raw_cbor of the file lib/misc/lecp.c of the component LECP CBOR Recording. The manipulation results in out-of-bounds write. The attack can be launched remotely. The exploit has been made public and could be used. The patch is identified as 1d44554a1bb262db63ff4e240152a9deecd99054. It is best practice to apply a patch to resolve this issue.

A critical out-of-bounds write vulnerability has been identified in warmcat libwebsockets version 4.5.0. The flaw resides in the function report_raw_cbor within lib/misc/lecp.c, part of the LECP CBOR Recording component. The vulnerability can be exploited remotely, allowing attackers to perform out-of-bounds memory writes. A public proof-of-concept exploit has been released, increasing the risk of active exploitation. The patch commit 1d44554a1bb262db63ff4e240152a9deecd99054 has been made available to address the issue. Users are strongly advised to apply the patch immediately to mitigate potential risks.