What’s Vulnerable › Vulnerabilities

CVE-2017-1000230

• Severity: high (CVSS 7.5 v3.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.0% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2017-11-17 · updated 2026-06-17
• Weakness: CWE-20

Description

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.

Affected products

• Snap7 Project Snap7 Server: 1.4.1

References

• https://sourceforge.net/p/snap7/discussion/bugfix/thread/2d2d085c/
• https://sourceforge.net/p/snap7/discussion/bugfix/thread/2d2d085c/

Get alerted when CVE-2017-1000230 or the next vulnerability affects your stack