Insta InstaKNXServiceApp 1.2.3.1469 Firmware Update CreateWebClientAndDownloadFileList data authenticity

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.
3.6$0-$5k1.01

Summaryinfo

A vulnerability was found in Insta InstaKNXServiceApp 1.2.3.1469. It has been classified as problematic. This affects the function CreateWebClientAndDownloadFileList of the component Firmware Update Handler. The manipulation leads to data authenticity. This vulnerability is documented as CVE-2026-19061. The attack can be initiated remotely. There is not any exploit available. The vendor was contacted early about this disclosure but did not respond in any way.

Detailsinfo

A vulnerability was found in Insta InstaKNXServiceApp 1.2.3.1469. It has been rated as problematic. This issue affects the function CreateWebClientAndDownloadFileList of the component Firmware Update Handler. The manipulation with an unknown input leads to a data authenticity vulnerability. Using CWE to declare the problem leads to CWE-345. The product does not sufficiently verify the origin or authenticity of data, in a way that causes it to accept invalid data. Impacted is integrity.

It is possible to read the advisory at gist.github.com. The identification of this vulnerability is CVE-2026-19061. The exploitation is known to be difficult. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. Technical details of the vulnerability are known, but there is no available exploit. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 08/06/2026).

The vendor was contacted early about this disclosure but did not respond in any way.

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

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Vendor

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 3.7
VulDB Meta Temp Score: 3.6

VulDB Base Score: 3.7
VulDB Temp Score: 3.6
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: Data authenticity
CWE: CWE-345
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined
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

08/06/2026 Advisory disclosed
08/06/2026 +0 days VulDB entry created
08/06/2026 +0 days VulDB entry last update

Sourcesinfo

Advisory: gist.github.com
Status: Not defined

CVE: CVE-2026-19061 (🔒)
GCVE (CVE): GCVE-0-2026-19061
GCVE (VulDB): GCVE-100-386531

Entryinfo

Created: 08/06/2026 10:34
Changes: 08/06/2026 10:34 (54)
Complete: 🔍
Submitter: isZzzzz
Cache ID: 216::103

Submitinfo

Accepted

  • Submit #864343: Insta GmbH InstaKNXServiceApp_v1.2.3.1469.etsapp v1.2.3.1469 Insufficient Verification of Data Authenticity (by isZzzzz)

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

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