What’s Vulnerable › Vulnerabilities

CVE-2023-51394: Potential DoS for EFR32xxx parts in high traffic environments due to null buffer dereference / crash

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.5% 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-476

Description

High traffic environments may result in NULL Pointer Dereference vulnerability in Silicon Labs's Ember ZNet SDK before v7.4.0, causing a system crash.

Affected products

• Silicon Labs EmberZNet: before 7.4.0 — fixed in 7.4.0

How to fix

Upgrade to a fixed version: Silicon Labs EmberZNet 7.4.0. Check the vendor advisory for mitigations.

References

• https://community.silabs.com/068Vm000001NL4u
• https://community.silabs.com/068Vm000001NL4u

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