Vulnerability in Insta Instaknxserviceapp
CVE-2026-19061
A flaw has been found in Insta InstaKNXServiceApp 1.2.3.1469. Affected by this issue is the function CreateWebClientAndDownloadFileList of the component Firmware Update Handler. Executing a manipulation can lead to insufficient verification of data authenticity. It is possible to launch the attack remotely. Attacks of this nature are highly complex. The exploitation is known to be difficult. There are still doubts about whether this vulnerability truly exists. The vendor explains: "[T]he entry suggests that the device does not verify the authenticity of the update. This is incorrect. The device performs an authenticity check after the complete update has been transferred. If this check fails, the update is not installed and the previously installed firmware continues to run".
Published · last modified .
CVSS v3 metric
CVSS v3 base score 3.7 (Low). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N.
EPSS exploit prediction
EPSS: 0.002 (12.4th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 12th percentile — 12.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: 0.000
Affected products
- Insta Instaknxserviceapp — versions 1.2.3.1469
Weakness classification (CWE)
References
- gist.github.com/isZzzz/f9da7d76cf2f7b93ec3f90efe17ed323 (broken-link)
- vuldb.com/cve/CVE-2026-19061 (third-party-advisory)
- vuldb.com/submit/864343 (third-party-advisory)
- vuldb.com/vuln/386531 (technical-description, vdb-entry)
- vuldb.com/vuln/386531/cti (signature, permissions-required)
Frequently asked questions
- What is CVE-2026-19061?
- CVE-2026-19061 is a low-severity vulnerability in Insta Instaknxserviceapp, classified under Insufficient Verification of Data Authenticity. CVSS score: 3.7/10. Published 2026-08-06.
- How severe is CVE-2026-19061?
- Low severity. CVSS v3 base score is 3.7 out of 10.