Medium severity · published Aug 18, 2023
CVE-2023-27471
An issue was discovered in Insyde InsydeH2O with kernel 5.0 through 5.5
5.5
CVSS
0.2%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Attack vector
Local
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 6% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
IN
Insydeh2o · Insyde
5.0; 5.1; 5.2; 5.3; 5.4; 5.5 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2023-27471
CVE.org
https://www.cve.org/CVERecord?id=CVE-2023-27471
Vendor Advisory
https://www.insyde.com/security-pledge/SA-2023036
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