HOMEVULNERABILITIESCVE-2023-27471
MEDIUM

CVE-2023-27471

NVD-CWE-noinfoPublished: August 18, 2023· Updated: Jun 17, 2026

5.5
CVSS v3.1

Official Description

An issue was discovered in Insyde InsydeH2O with kernel 5.0 through 5.5. UEFI implementations do not correctly protect and validate information contained in the 'MeSetup' UEFI variable. On some systems, this variable can be overwritten using operating system APIs. Exploitation of this vulnerability could potentially lead to denial of service for the platform.

NVD Source

Technical Analysis

CVE-2023-27471 requires local access, meaning attackers must already have a foothold on the target system.

Exploitation requires low privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

A successful exploit results in availability disruption (denial of service), with a CVSS base score of 5.5.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorLocal
Attack ComplexityLow
Privileges Req.Low
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityNone
IntegrityNone
AvailabilityHigh
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Affected Vendors & Products

insyde1 product(s)
insydeh2o
Source: NVD CPE · 6 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

ADVISORYhttps://www.insyde.com/security-pledge/SA-2023036
ADVISORYhttps://www.insyde.com/security-pledge/SA-2023036

All References (2)

→
https://www.insyde.com/security-pledge/SA-2023036Vendor Advisory
→
https://www.insyde.com/security-pledge/SA-2023036Vendor Advisory

Quick Facts

CVE IDCVE-2023-27471
CVSS Score5.5 / 10
SeverityMEDIUM
WeaknessNVD-CWE-noinfo
CISA KEVNo
Affected1 vendor(s)
PublishedAug 18, 2023

Related CVEs (NVD-CWE-noinfo)

CVE-2010-0071
10.0
CVE-2008-5010
10.0
CVE-2008-4873
10.0
CVE-2014-2624
10.0
CVE-2015-6787
10.0
CVE-2006-3698
10.0

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2023-27471 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.COM. CVE data is provided under the NVD usage policy.
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