01 Record
CVE-2023-4020
Unvalidated input in Silicon Labs PSA Attestation service leads to secure memory access from non-secure memory
CriticalPUBLISHEDCNA: Silabs
CNA base score9.0 CVSS v3.xCVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N
02 Description
Unvalidated input in Silicon Labs PSA Attestation service leads to secure memory access from non-secure memory
03 Exploitation and scoring
- Exploitation
- Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.
- SSVC decision
- Not assessed by CISA
- EPSS probability
- 0.56% probability of exploitation activity in the next 30 days.
- EPSS percentile
- Equal to or higher than the score of 46.8% of scored records. A rank, not a probability.
- NVD base score
- 9.1 (CVSS v3.x), scored by the NVD independently of the CNA.
- NVD CVSS vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
- NVD analysis status
- Modified. NVD last modified this record on 2026-06-17.
- 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
- 2023-12-15 20:37Z2 YR AGO
- Last updated
- 2024-09-26 14:11Z2 YR AGO
- Reserved
- 2023-07-31
- Assigning CNA
- Silabs
- Record state
- PUBLISHED
- Severity
- Critical (CVSS 9.0)
- CNA CVSS vector
- CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N
- Weaknesses
- Data version
- 5.1
- Document digest
- 17789d3eab9ec284e45583615fd53d6ceca77ea462548e54b10455d1df293b75
05 Affected products
VendorProductVersionsPlatforms
06 References
- github.comhttps://github.com/SiliconLabs/gecko_sdk/releases
- community.silabs.comhttps://community.silabs.com/069Vm0000004b95IAA