The Snap7 Server version 1.4.1 can be crashed when the ItemCount field of the ReadVar or…
Priority LOW 35CWE-20Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- No fix listed
Attack profile from CVSS 3.0 · NVD. Fix status from CNA.
Summary
The Snap7 Server version 1.4.1 can be crashed when the ItemCount field of the ReadVar or WriteVar functions of the S7 protocol implementation in Snap7 are provided with unexpected input, thus resulting in denial of service attack.
Why it matters now
EPSS 0.01029 63rd percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:snap7_project:snap7_server:1.4.1:*:*:*:*:*:*:* | 1.4.1 | Vulnerable | Snap7 Project |
- cpe:2.3:a:snap7_project:snap7_server:1.4.1:*:*:*:*:*:*:* Versions 1.4.1 Vulnerable ·Snap7 Project
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2017-1000230
- 2026-10-03 Alias added: GHSA-58r9-jqc4-jgp3
References
Sources
- CVE-2017-1000230 · CVE Program
- CVE-2017-1000230 · NVD
- FIRST EPSS
- GHSA-58r9-jqc4-jgp3 · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences