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01 Record

CVE-2023-51392

Silicon Labs EFR32xxx parts with classic key storage do not use hardware accelerated AES-CCM

MediumPUBLISHEDCNA: Silabs
CNA base score6.2 CVSS v3.xCVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

02 Description

Silicon Labs EFR32xxx parts with classic key storage do not use hardware accelerated AES-CCM

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.
CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.
EPSS probability
0.24% probability of exploitation activity in the next 30 days.
EPSS percentile
Equal to or higher than the score of 15.4% of scored records. A rank, not a probability.
NVD base score
9.8 (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:H
NVD analysis status
Analyzed. 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
2024-02-23 16:12Z2 YR AGO
Last updated
2025-04-22 16:15Z1 YR AGO
Reserved
2023-12-18
Assigning CNA
Silabs
Record state
PUBLISHED
Severity
Medium (CVSS 6.2)
CNA CVSS vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Weaknesses
  • CWE-1240Use of a Cryptographic Primitive with a Risky ImplementationBase
  • CWE-327Use of a Broken or Risky Cryptographic AlgorithmClass
Data version
5.1
Document digest
a9e11facabde31579d9c34cbca5497cd4a49d94c48544d3d3c34be191247eff0

05 Affected products

VendorProductVersionsPlatforms
silabs.comEmber ZNet SDK7.2.0 to < 7.4.032 bit, ARM

06 References