Vulnerability CVE-2023-42799
Published: 2023-12-14

Description:
Moonlight-common-c contains the core GameStream client code shared between Moonlight clients. Moonlight-common-c is vulnerable to buffer overflow starting in commit 50c0a51b10ecc5b3415ea78c21d96d679e2288f9 due to unmitigated usage of unsafe C functions and improper bounds checking. A malicious game streaming server could exploit a buffer overflow vulnerability to crash a moonlight client, or achieve remote code execution (RCE) on the client (with insufficient exploit mitigations or if mitigations can be bypassed). The bug was addressed in commit 02b7742f4d19631024bd766bd2bb76715780004e.

Type:

CWE-120

 (Buffer Copy without Checking Size of Input ('Classic Buffer Overflow'))

 References:
https://github.com/moonlight-stream/moonlight-common-c/security/advisories/GHSA-r8cf-45f4-vf8m
https://github.com/moonlight-stream/moonlight-common-c/commit/02b7742f4d19631024bd766bd2bb76715780004e
https://github.com/moonlight-stream/moonlight-common-c/commit/50c0a51b10ecc5b3415ea78c21d96d679e2288f9
Copyright 2026, cxsecurity.com

 

Back to Top