CVE-2026-90572
Medium
Description
A vulnerability was determined in davenardella snap7 up to 1.4.3. The affected element is the function TSnap7MicroClient::opUpload of the file src/core/s7_micro_client.cpp. Executing a manipulation of the argument DataLen can lead to memory corruption. The attack can be executed remotely. The exploit has been publicly disclosed and may be utilized. The project was informed of the problem early through an issue report but has not responded yet.
SeverityMedium
CVSS4.7
Exploit probability—
ProductDavenardella Snap7
PublishedSep 13, 2026
First seenSep 13, 2026
Weakness typeCWE-119Memory buffer bounds error
How to fix
Vendor advisories
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| davenardella snap7 | 1.4.0, 1.4.1, 1.4.2, 1.4.3 | — |
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