CVE-2021-33626
—CVSS 3.1
7.8 high
EPSS
<1%p23
Published
()
Modified
Description
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.
- Vendors
- insydesiemens
- Products
- insydeh2o, ruggedcom apr1808 firmware, simatic field pg m5 firmware, simatic field pg m6 firmware, simatic ipc127e firmware, simatic ipc227g firmware, simatic ipc277g firmware, simatic ipc327g firmware, simatic ipc377g firmware, simatic ipc427e firmware, simatic ipc477e firmware, simatic ipc477e pro firmware
- Weakness
- CWE-829
- Vector
- CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
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