CVE-2021-26327
Insufficient validation of guest context in the SNP Firmware could lead to a potential loss of...
Insufficient validation of guest context in the SNP Firmware could lead to a potential loss of guest confidentiality.
Attack profile
How easy it is to exploit
- Attack vector
- Local
- Complexity
- Low
- Privileges needed
- Low
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- None
- Availability
- None
Exploit likelihood
What each source reports
NVD Score used
Insufficient validation of guest context in the SNP Firmware could lead to a potential loss of guest confidentiality.
- Record
CVE-2021-26327- CVSS 3.1
- 5.5 Medium
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N - CVSS 2.0
- 2.1 Low
AV:L/AC:L/Au:N/C:P/I:N/A:N - Weakness
- CWE-20, CWE-668
- Updated
- 2026-11-02
CVE List No score
Insufficient validation of guest context in the SNP Firmware could lead to a potential loss of guest confidentiality.
- Record
CVE-2021-26327- Weakness
- CWE-20
- Updated
- 2026-11-02
EUVDEUVD-2021-13133 No score
Insufficient validation of guest context in the SNP Firmware could lead to a potential loss of guest confidentiality.
- Record
EUVD-2021-13133- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-qg7x-g66q-6pmh No score
Insufficient validation of guest context in the SNP Firmware could lead to a potential loss of...
Insufficient validation of guest context in the SNP Firmware could lead to a potential loss of guest confidentiality.
- Record
GHSA-qg7x-g66q-6pmh- Weakness
- CWE-668
- Updated
- 2026-11-02
Affected products
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases, published | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2021-26327 is a medium vulnerability (CVSS 5.5) in Amd 3rd Gen Amd Epyc™, published November 16, 2021. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.24%, the 15th percentile. No source names a fixed version.