9.8
CVSSv3

CVE-2021-27965

Published: 05/03/2021 Updated: 16/03/2021
CVSS v2 Base Score: 7.5 | Impact Score: 6.4 | Exploitability Score: 10
CVSS v3 Base Score: 9.8 | Impact Score: 5.9 | Exploitability Score: 3.9
VMScore: 668
Vector: AV:N/AC:L/Au:N/C:P/I:P/A:P

Vulnerability Summary

The MsIo64.sys driver prior to 1.1.19.1016 in MSI Dragon Center prior to 2.0.98.0 has a buffer overflow that allows privilege escalation via a crafted 0x80102040, 0x80102044, 0x80102050, or 0x80102054 IOCTL request.

Vulnerability Trend

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msi dragon center

Github Repositories

stack based buffer overflow in MsIo64.sys, Proof of Concept Local Privilege Escalation to nt authority/system

CVE-2021-27965 Simple PoC for exploiting CVE-2021-27965 for LPE by spawning system cmd cvemitreorg/cgi-bin/cvenamecgi?name=CVE-2021-27965 An issue was discovered in signed MICSYS windows driver (MsIo64sys) which may lead to compromisation of whole local system Driver's ioctl dispatch routine suffers from stack based buffer overflow in all IOCTL codes and also