CVE-2025-7964

Improper Handling of Values (CWE-229)

2026-01-30 product-security@silabs.com

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Vulnerability Assessment

Weakness	CWE CWE-229
Impact	Exploitable via remote/network.
Exploit ScenarioDerived	A remote attacker could exploit this flaw, the Zigbee Router getting stuck in a non-rejoinable state.

Monitor Track and reassess. Why: No CVSS yet + weak signal (CWE or non-zero EPSS).

No patch listed yet 0.1% exploitation probability (EPSS)

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AnalysisAIv1 – Mar 12, 2026

After receiving a

malformed 802.15.4 MAC Data Request

the Zigbee Coordinator sends a ‘network leave’ request to Zigbee router resulting in the Zigbee Router getting stuck in a non-rejoinable state. If a suitable parent is not available, the end devices will be unable to rejoin.

RemediationAI

Monitor vendor advisories for a patch.

Affected ProductsAI

After receiving a

malformed 802.15.4 MAC Data Request

the Zigbee Coordinator sends a ‘network leave’ request to Zigbee router resulting in the Zig

Affects your stack

Find out whether the stacks and servers you run are on an affected version.

Checking this CVE against your own stacks and servers is part of the Basic plan and up.

Technical ContextAI · show details

After receiving a

malformed 802.15.4 MAC Data Request

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Check this CVE against your own stack and servers
Exploit and PoC references, threat intelligence from 22 sources

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DescriptionCVE.org

After receiving a

malformed 802.15.4 MAC Data Request

Threat Intelligence Overview

EPSS Score

0.1%

Top 81% exploitable

Data Quality

2 sources

Confidence: Low

CVE.org

EPSS

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue

Severity Not scored yet

CISA KEV No

Public POC No

EPSS 0.1%

Patch available No

Active threat No

Deciding rule

No CVSS yet + weak signal (CWE or non-zero EPSS)

What every action level means

Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.

Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.

This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.

This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.

Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

Attack Technique

Information Disclosure MEDIUM

Information disclosure occurs when an application unintentionally exposes sensitive data that aids attackers in reconnaissance or directly compromises security.