Silabs Zigbee Stack up to 4.3.4/2024.6.2 return value

CVSS Meta Temp Score
CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.
Current Exploit Price (≈)
Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.
CTI Interest Score
Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
8.0$0-$5k0.00

Summaryinfo

A vulnerability classified as critical has been found in Silabs Zigbee Stack up to 4.3.4/2024.6.2. This issue affects some unknown processing. This manipulation causes return value. The identification of this vulnerability is CVE-2025-1394. The attack needs to be done within the local network. There is no exploit available.

Detailsinfo

A vulnerability has been found in Silabs Zigbee Stack up to 4.3.4/2024.6.2 and classified as critical. Affected by this vulnerability is some unknown processing. The manipulation with an unknown input leads to a return value vulnerability. The CWE definition for the vulnerability is CWE-252. The product does not check the return value from a method or function, which can prevent it from detecting unexpected states and conditions. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

The Ember ZNet stack’s packet buffer manager may read out of bound memory leading to an assert, causing a Denial of Service (DoS).

The advisory is shared at silabs.com. This vulnerability is known as CVE-2025-1394 since 02/17/2025. The exploitation appears to be easy. Access to the local network is required for this attack to succeed. Neither technical details nor an exploit are publicly available. The price for an exploit might be around USD $0-$5k at the moment (estimation calculated on 03/06/2026).

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2025-23149). Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Vendor

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA CVSS-B Score: 🔒
CNA CVSS-BT Score: 🔒
CNA Vector: 🔒

CVSSv3info

VulDB Meta Base Score: 8.0
VulDB Meta Temp Score: 8.0

VulDB Base Score: 8.0
VulDB Temp Score: 8.0
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Return value
CWE: CWE-252 / CWE-253
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Partially

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔒

Timelineinfo

02/17/2025 CVE reserved
07/30/2025 +162 days Advisory disclosed
07/30/2025 +0 days VulDB entry created
03/06/2026 +219 days VulDB entry last update

Sourcesinfo

Advisory: silabs.com
Status: Confirmed

CVE: CVE-2025-1394 (🔒)
GCVE (CVE): GCVE-0-2025-1394
GCVE (VulDB): GCVE-100-318289
EUVD: 🔒

Entryinfo

Created: 07/30/2025 10:37
Updated: 03/06/2026 09:44
Changes: 07/30/2025 10:37 (63), 07/30/2025 15:23 (1), 08/08/2025 16:32 (1), 03/06/2026 09:44 (3)
Complete: 🔍
Cache ID: 216::103

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Discussion

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