An issue was discovered in Insyde InsydeH2O kernel 5.2 before version 05.29.50, kernel 5.3 before version 05.38.50, kernel 5.4 before version 05.46.50, kernel 5.5 before version 05.54.50, kernel 5.6 before version 05.61.50, and kernel 5.7 before version 05.70.50. In VariableRuntimeDxe driver, callback function SmmCreateVariableLockList () calls CreateVariableLockListInSmm (). In CreateVariableLockListInSmm (), it uses StrSize () to get variable name size and it could lead to a buffer over-read.
CVE ID: CVE-2024-52877
Vendor: n/a
Product: n/a
EPSS Score: 0.04% (probability of being exploited)
EPSS Percentile: 11.83% (scored less or equal to compared to others)
EPSS Date: 2025-06-13 (when was this score calculated)