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CVE-2023-51394

Potential DoS for EFR32xxx parts in high traffic environments due to null buffer dereference / crash

HIGH
7.5
CVSS Score
Published: February 23, 2024 at 07:13 PM UTC
Updated: June 17, 2026 at 06:40 AM UTC
3 products affected across 2 vendorsEmberznetEmberZNet SDKEmberznet SDK

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Severity
HIGH7.5
Exploit prediction
EPSS 0.5%
SSVC
No known exploit

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

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Emberznet· Silabs
95%
v < 7.4.0
Affected range stops below 7.4.0, so it looks safe — our inference, not a vendor statement
EmberZNet SDK· Silabs Com
60%
v < 7.4.0
Affected range stops below 7.4.0, so it looks safe — our inference, not a vendor statement
Emberznet SDK· Silabs
60%
v < 7.4.0
Affected range stops below 7.4.0, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (1)

Permissions Required
Source: [email protected]
https://community.silabs.com/068Vm000001NL4u

SSVC — Action Prioritization

SSVCNo known exploitAutomatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

7.5HIGH[email protected]
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusANALYZED
CWE
CWE-476

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