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.

Attack Vector Network

Attack Complexity Low

Privileges Required High

Attack Requirements None

User Interaction None

Vulnerable System Confidentiality Impact Low

Vulnerable System Integrity Impact Low

Vulnerable System Availability Impact Low

Subsequent System Confidentiality Impact None

Subsequent System Integrity Impact None

Subsequent System Availability Impact None

Attack Vector Network

Attack Complexity Low

Privileges Required High

Scope Unchanged

Confidentiality Impact Low

Integrity Impact Low

Availability Impact Low

User Interaction None

Attack Vector Network

Attack Complexity Low

Privileges Required High

Scope Unchanged

Confidentiality Impact Low

Integrity Impact Low

Availability Impact Low

User Interaction None

Access Vector Network

Access Complexity Low

Authentication Multiple

Confidentiality Impact Partial

Integrity Impact Partial

Availability Impact Partial

This CVE is not in the KEV list.

No EPSS score available.

Key SSVC decision points have not yet been added.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
davenardella snap7 affected
Version Status Constraints
1.4.0 affected —
1.4.1 affected —
1.4.2 affected —
1.4.3 affected —

No data.

No data.

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Project Subscriptions

Vendors Products
Davenardella Subscribe
Snap7 Subscribe
Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://github.com/davenardella/snap7/ cve-icon cve-icon
https://github.com/davenardella/snap7/issues/30 cve-icon cve-icon
https://vuldb.com/cve/CVE-2026-90572 cve-icon cve-icon
https://vuldb.com/submit/912711 cve-icon cve-icon
https://vuldb.com/vuln/403157 cve-icon cve-icon
https://vuldb.com/vuln/403157/cti cve-icon cve-icon
History

Sun, 13 Sep 2026 17:30:00 +0000

Type Values Removed Values Added
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.
Title davenardella snap7 s7_micro_client.cpp opUpload memory corruption
First Time appeared Davenardella
Davenardella snap7
Weaknesses CWE-119
CPEs cpe:2.3:a:davenardella:snap7:*:*:*:*:*:*:*:*
Vendors & Products Davenardella
Davenardella snap7
References
Metrics cvssV2_0

{'score': 5.8, 'vector': 'AV:N/AC:L/Au:M/C:P/I:P/A:P/E:POC/RL:ND/RC:UR'}

cvssV3_0

{'score': 4.7, 'vector': 'CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R'}

cvssV3_1

{'score': 4.7, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R'}

cvssV4_0

{'score': 5.1, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P'}

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: VulDB

Published:

Updated: 2026-09-13T17:15:10.721Z

Reserved: 2026-09-12T16:11:37.054Z

Link: CVE-2026-90572

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-09-13T18:16:48.727

Modified: 2026-09-13T18:16:48.727

Link: CVE-2026-90572

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses