HOMEVULNERABILITIESCVE-2021-27965
CRITICAL

CVE-2021-27965

CWE-120Published: March 5, 2021· Updated: Jun 17, 2026

9.8
CVSS v3.1

Official Description

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

NVD Source

Technical Analysis

CVE-2021-27965 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 9.8.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges Req.None
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected Vendors & Products

msi1 product(s)
dragon center
Source: NVD CPE · 1 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

PATCHhttps://www.microsoft.com/en-us/p/msi-dragon-center/9nh7n2bv1cqq?activetab=pivot:overviewtab
PATCHhttps://www.microsoft.com/en-us/p/msi-dragon-center/9nh7n2bv1cqq?activetab=pivot:overviewtab
ADVISORYhttps://github.com/kronl/cve/tree/master/MSI_Dragon_Center
ADVISORYhttps://github.com/kronl/cve/tree/master/MSI_Dragon_Center

All References (4)

→
https://github.com/kronl/cve/tree/master/MSI_Dragon_CenterBroken Link · Third Party Advisory
→
https://www.microsoft.com/en-us/p/msi-dragon-center/9nh7n2bv1cqq?activetab=pivot:overviewtabPatch · Vendor Advisory
→
https://github.com/kronl/cve/tree/master/MSI_Dragon_CenterBroken Link · Third Party Advisory
→
https://www.microsoft.com/en-us/p/msi-dragon-center/9nh7n2bv1cqq?activetab=pivot:overviewtabPatch · Vendor Advisory

Quick Facts

CVE IDCVE-2021-27965
CVSS Score9.8 / 10
SeverityCRITICAL
WeaknessCWE-120
CISA KEVNo
Affected1 vendor(s)
PublishedMar 5, 2021

Related CVEs (CWE-120)

CVE-2002-1337
10.0
CVE-2001-0554
10.0
CVE-2010-10016
10.0
CVE-2026-24810
10.0
CVE-2011-4862
10.0
CVE-2007-1770
10.0

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2021-27965 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWatch. CVE data is provided under the NVD usage policy.
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