CVE-2021-38578
7.5 High
CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:L/Au:N/C:P/I:P/A:P
10 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
9.2 High
AI Score
Confidence
High
0.002 Low
EPSS
Percentile
55.9%
Existing CommBuffer checks in SmmEntryPoint will not catch underflow when computing BufferSize.
Affected configurations
| CPE | Name | Operator | Version |
|---|---|---|---|
| tianocore:edk2 | tianocore edk2 | le | 202202 |
CNA Affected
[
{
"defaultStatus": "unaffected",
"product": "EDK II",
"vendor": "TianoCore",
"versions": [
{
"status": "affected",
"version": "edk2-stable202208"
}
]
}
]Social References
More
Related
7.5 High
CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:L/Au:N/C:P/I:P/A:P
10 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
9.2 High
AI Score
Confidence
High
0.002 Low
EPSS
Percentile
55.9%