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Snap7 Project

snap7_project

2 CVEs • 2 products

Products (2)

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Snap7 Server
snap7_server
1 CVE
Snap7
snap7
1 CVE

CVEs (2)

CVE
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CVSS
CVE-2020-22552
1Snap7 Project
1Snap7
Jul 9, 2026
Oct 28, 2020
N/A· v4
7.5 HIGH· v3
5.0 MEDIUM· v2
The Snap7 server component in version 1.4.1, when an attacker sends a crafted packet with COTP protocol the last-data-unit flag set to No and S7 writes a var function, the Snap7 server will be crashed.
CVE-2017-1000230
1Snap7 Project
1Snap7 Server
May 13, 2026
Nov 17, 2017
N/A· v4
7.5 HIGH· v3
5.0 MEDIUM· v2
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 servi...Show more
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.Show less