Medium severity · published Aug 7, 2023
CVE-2023-27373
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. Due to insufficient input validation, an attacker can tamper with a runtime-accessible EFI variable to cause a dynamic BAR setting to overlap SMRAM.
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
Attack vector
Local
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
None
Integrity
High
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 7% 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-2023-27373
CVE.org
https://www.cve.org/CVERecord?id=CVE-2023-27373
Vendor Advisory
https://www.insyde.com/security-pledge/SA-2023035
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