CVE-2021-38489
HDD Password Stored In Plaintext
8.2 High
HDD password plaintext is stored in a UEFI variable.
Attack profile
How easy it is to exploit
- Attack vector
- Local
- Complexity
- Low
- Privileges needed
- High
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Exploit likelihood
0.16%Unchanged since Sep 3, 2026
What each source reports
CVE List Score used
HDD Password Stored In Plaintext
HDD password plaintext is stored in a UEFI variable.
- Record
CVE-2021-38489- CVSS 3.1
- 8.2 High
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H - Weakness
- CWE-256
- Updated
- 2026-11-02
EUVDEUVD-2021-34870
HDD password plaintext is stored in a UEFI variable.
- Record
EUVD-2021-34870- CVSS 3.1
- 8.2 High
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H - Updated
- 2026-11-02
GitHub AdvisoriesGHSA-55q7-h555-p52r
HDD password plaintext is stored in a UEFI variable.
HDD password plaintext is stored in a UEFI variable.
- Record
GHSA-55q7-h555-p52r- CVSS 3.1
- 8.2 High
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H - Weakness
- CWE-256
- Updated
- 2026-11-02
NVD
HDD password plaintext is stored in a UEFI variable.
- Record
CVE-2021-38489- CVSS 3.1
- 8.2 High
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H - Weakness
- CWE-256
- Updated
- 2026-11-02
Affected products
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-2021-38489 is a high vulnerability (CVSS 8.2) in Insyde Software Insydeh2o, published September 3, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.16%, the 5th percentile. No source names a fixed version.