01 Record
CVE-2021-43613
SysPasswordDxe: Password hashes are exposed in runtime UEFI variables, leading to escalation of privilege
MediumPUBLISHEDCNA: Insyde
CNA base score6.5 CVSS v3.xCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:N
02 Description
SysPasswordDxe: Password hashes are exposed in runtime UEFI variables, leading to escalation of privilege
03 Exploitation and scoring
- Exploitation
- Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.
- SSVC decision
- ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
- AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
- Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.
- EPSS probability
- 0.13% probability of exploitation activity in the next 30 days.
- EPSS percentile
- Equal to or higher than the score of 2.6% of scored records. A rank, not a probability.
- NVD base score
- 6.5 (CVSS v3.x), scored by the NVD independently of the CNA.
- NVD CVSS vector
- CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:N
- NVD analysis status
- Undergoing Analysis. NVD last modified this record on 2026-09-03.
- Red Hat severity
- No Red Hat rating. Red Hat rates the CVEs that affect its products.
Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.
04 Metadata
- Published
- 2026-09-03 02:05Z1 MO AGO
- Last updated
- 2026-09-03 13:03Z1 MO AGO
- Reserved
- 2021-11-12
- Assigning CNA
- Insyde
- Record state
- PUBLISHED
- Severity
- Medium (CVSS 6.5)
- CNA CVSS vector
- CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:N
- Weaknesses
- CWE-732Incorrect Permission Assignment for Critical ResourceClass
- Data version
- 5.2
- Document digest
- 3ee9cd48358a447080f5b7ca702f6623c4929fa2583c66a673dae16004cfd51c
05 Affected products
VendorProductVersionsPlatforms
06 References
- www.insyde.comhttps://www.insyde.com/security-pledge/sa-2022027/
07 Remediation
Kernel 5.1: Version 05.17.09 Kernel 5.2: Version 05.27.09 Kernel 5.3: Version 05.36.09 Kernel 5.4: Version 05.44.09 Kernel 5.5: Version 05.52.09