VDB-408317 · CVE-2026-78806 · GCVE-0-2026-78806

Matter Standard Specification-Implementation gap 1.5.1 Chip ChipDeviceController.cpp PerformCommissioningStep information disclosure

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.
3.2	$0-$5k	0.41+

Summaryinfo

A vulnerability was found in Matter Standard Specification-Implementation gap 1.5.1. It has been rated as problematic. This affects the function PerformCommissioningStep of the file ChipDeviceController.cpp of the component Chip. The manipulation leads to information disclosure. This vulnerability is uniquely identified as CVE-2026-78806. Local access is required to approach this attack. No exploit exists.

Detailsinfo

A vulnerability was found in Matter Standard Specification-Implementation gap 1.5.1 and classified as problematic. This issue affects the function PerformCommissioningStep of the file ChipDeviceController.cpp of the component Chip. The manipulation with an unknown input leads to a information disclosure vulnerability. Using CWE to declare the problem leads to CWE-200. The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information. Impacted is confidentiality. The summary by CVE is:

An issue in Matter Standard Specification-Implementation gap v1.5.1 Matter Project Chip V1.5.1 allows a local attacker to obtain sensitive information via the PerformCommissioningStep function in the ChipDeviceController.cpp component

The advisory is shared at github.com. The identification of this vulnerability is CVE-2026-78806 since 08/25/2026. The exploitation is known to be easy. An attack has to be approached locally. Technical details are known, but no exploit is available. MITRE ATT&CK project uses the attack technique T1592 for this issue.

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

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Productinfo

Vendor

Matter

Name

Standard Specification-Implementation gap

Version

1.5.1

CPE 2.3info

🔒

CPE 2.2info

🔒

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 3.3
VulDB Meta Temp Score: 3.2

VulDB Base Score: 3.3
VulDB Temp Score: 3.2
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock

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

Exploitinginfo

Class: Information disclosure
CWE: CWE-200 / CWE-284 / CWE-266
CAPEC: 🔒
ATT&CK: 🔒

Physical: Partially
Local: Yes
Remote: No

Availability: 🔒
Status: Not defined
Price Prediction: 🔍
Current Price Estimation: 🔒

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔒

Timelineinfo

08/25/2026 CVE reserved
09/21/2026 +27 days Advisory disclosed
09/21/2026 +0 days VulDB entry created
09/21/2026 +0 days VulDB entry last update

Sourcesinfo

Advisory: github.com
Status: Not defined

CVE: CVE-2026-78806 (🔒)
GCVE (CVE): GCVE-0-2026-78806
GCVE (VulDB): GCVE-100-408317

Entryinfo

Created: 09/21/2026 23:57
Changes: 09/21/2026 23:57 (55)
Complete: 🔍
Cache ID: 216::103