CVE-2021-26403
Insufficient checks in SEV may lead to a malicious hypervisor disclosing the launch secret...
Insufficient checks in SEV may lead to a malicious hypervisor disclosing the launch secret potentially resulting in compromise of VM 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 checks in SEV may lead to a malicious hypervisor disclosing the launch secret potentially resulting in compromise of VM confidentiality.
- Record
CVE-2021-26403- CVSS 3.1
- 6.5 Medium
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N - Weakness
- CWE-345
- Updated
- 2026-11-02
CVE List
Insufficient checks in SEV may lead to a malicious hypervisor disclosing the launch secret potentially resulting in compromise of VM confidentiality.
- Record
CVE-2021-26403- CVSS 3.1
- 6.5 Medium
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N - Weakness
- CWE-345
- Updated
- 2026-11-02
EUVDEUVD-2021-13209
Insufficient checks in SEV may lead to a malicious hypervisor disclosing the launch secret potentially resulting in compromise of VM confidentiality.
- Record
EUVD-2021-13209- CVSS 3.1
- 6.5 Medium
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N - Updated
- 2026-11-02
GitHub AdvisoriesGHSA-cfcv-rgx7-fw5j
Insufficient checks in SEV may lead to a malicious hypervisor disclosing the launch secret...
Insufficient checks in SEV may lead to a malicious hypervisor disclosing the launch secret potentially resulting in compromise of VM confidentiality.
- Record
GHSA-cfcv-rgx7-fw5j- CVSS 3.1
- 6.5 Medium
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N - Weakness
- CWE-345
- Updated
- 2026-11-02
Affected products
- amd 1st gen epyc
- amd 2nd gen epyc
- amd epyc 7001 firmware
- amd epyc 7002 firmware
- amd epyc 7232p firmware
- amd epyc 7251 firmware
- amd epyc 7252 firmware
- amd epyc 7261 firmware
- amd epyc 7262 firmware
- amd epyc 7272 firmware
- amd epyc 7281 firmware
- amd epyc 7282 firmware
Show 31 moreShow less
- amd epyc 7301 firmware
- amd epyc 7302 firmware
- amd epyc 7302p firmware
- amd epyc 7351 firmware
- amd epyc 7351p firmware
- amd epyc 7352 firmware
- amd epyc 7371 firmware
- amd epyc 7401 firmware
- amd epyc 7401p firmware
- amd epyc 7402 firmware
- amd epyc 7402p firmware
- amd epyc 7451 firmware
- amd epyc 7452 firmware
- amd epyc 7501 firmware
- amd epyc 7502 firmware
- amd epyc 7502p firmware
- amd epyc 7532 firmware
- amd epyc 7542 firmware
- amd epyc 7551 firmware
- amd epyc 7551p firmware
- amd epyc 7552 firmware
- amd epyc 7601 firmware
- amd epyc 7642 firmware
- amd epyc 7662 firmware
- amd epyc 7702 firmware
- amd epyc 7702p firmware
- amd epyc 7742 firmware
- amd epyc 7f32 firmware
- amd epyc 7f52 firmware
- amd epyc 7f72 firmware
- amd epyc 7h12 firmware
History
| Recorded | Changed | Sources |
|---|---|---|
| first indexed | CVE List, EUVD, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2021-26403 is a medium vulnerability (CVSS 6.5) in Amd 1st Gen Epyc, published January 10, 2023. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.13%, the 2nd percentile. No source names a fixed version.