CVE-2026-90572

davenardella snap7 s7_micro_client.cpp opUpload memory corruption

MEDIUM
4.7
CVSS Score
Published: September 13, 2026 at 05:15 PM UTC
Updated: September 15, 2026 at 03:17 PM UTC
1 product affected across 1 vendorSNAP7

Using snap7 by davenardella?

Get instant alerts when new vulnerabilities affect snap7 - before attackers find them.

Real-time alertsTrack your software stackFree plan available
Severity
MEDIUM4.7
Exploit prediction
EPSS 0.4%
SSVC
PoC

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (6)

VDB EntryTechnical DescriptionMitigation
Source: cverecord
https://vuldb.com/vuln/403157
SignaturePermissions Required
Source: cverecord
https://vuldb.com/vuln/403157/cti
Third Party Advisory
Source: cverecord
https://vuldb.com/cve/CVE-2026-90572
Third Party Advisory
Source: cverecord
https://vuldb.com/submit/912711
ExploitIssue Tracking
Source: cverecord
https://github.com/davenardella/snap7/issues/30

SSVC — Action Prioritization

SSVCPoCNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

4.7MEDIUMVulDB
Vector?

Quick Info

StatusDEFERRED
CWE
CWE-119

Get alerted

Stop reading CVE feeds looking for your own stack

Track the products you run and VulnTracker tells you when a new CVE affects them — with what is known about fixing it, and nothing about the rest.

Free plan, no card