CVE-2021-33626

A vulnerability exists in SMM (System Management Mode) branch that registers a SWSMI handler that does not sufficiently check or validate the allocated buffer pointer(QWORD values for CommBuffer). This can be used by an attacker to corrupt data in SMRAM memory and even lead to arbitrary code execution.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTNIST
7.8 HIGH
LOCAL
LOW
LOW
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
mitreCNA
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CVEADP
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Base Score
CVSS 3.x
EPSS Score
Percentile: 24%
VendorProductVersion
insydeinsydeh2o
5.3 ≤
𝑥
< 5.34.44
insydeinsydeh2o
5.2 ≤
𝑥
< 5.25.44
insydeinsydeh2o
5.1 ≤
𝑥
< 5.16.25
insydeinsydeh2o
5.4 ≤
𝑥
< 5.42.44
insydeinsydeh2o
5.3 ≤
𝑥
< 5.35.25
insydeinsydeh2o
5.2 ≤
𝑥
< 5.26.25
insydeinsydeh2o
5.4 ≤
𝑥
< 5.43.25
siemensruggedcom_apr1808_firmware
-
siemenssimatic_field_pg_m5_firmware
-
siemenssimatic_field_pg_m6_firmware
-
siemenssimatic_ipc127e_firmware
-
siemenssimatic_ipc227g_firmware
-
siemenssimatic_ipc277g_firmware
-
siemenssimatic_ipc327g_firmware
-
siemenssimatic_ipc377g_firmware
-
siemenssimatic_ipc427e_firmware
-
siemenssimatic_ipc477e_firmware
-
siemenssimatic_ipc477e_pro_firmware
-
siemenssimatic_ipc627e_firmware
-
siemenssimatic_ipc647e_firmware
-
siemenssimatic_ipc677e_firmware
-
siemenssimatic_ipc847e_firmware
-
siemenssimatic_itp1000_firmware
-
𝑥
= Vulnerable software versions