What’s Vulnerable › Vulnerabilities

CVE-2023-51392: Silicon Labs EFR32xxx parts with classic key storage do not use hardware accelerated AES-CCM

• Severity: critical (CVSS 9.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2024-02-23 · updated 2026-06-17
• Weakness: CWE-1240

Description

Ember ZNet between v7.2.0 and v7.4.0 used software AES-CCM instead of integrated hardware cryptographic accelerators, potentially increasing risk of electromagnetic and differential power analysis sidechannel attacks.

Affected products

• Silicon Labs EmberZNet: from 7.2.0 through 7.2.4

References

• https://community.silabs.com/068Vm000001BKm6
• https://community.silabs.com/068Vm000001BKm6

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