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5
CVSSv2

CVE-2020-22552

Published: 28/10/2020 Updated: 14/02/2024
CVSS v2 Base Score: 5 | Impact Score: 2.9 | Exploitability Score: 10
CVSS v3 Base Score: 7.5 | Impact Score: 3.6 | Exploitability Score: 3.9
VMScore: 445
Vector: AV:N/AC:L/Au:N/C:N/I:N/A:P
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Vulnerability Summary

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.

Vulnerability Trend

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snap7 project snap7 1.4.1

References

NVD-CWE-noinfohttps://sourceforge.net/projects/snap7/http://snap7.comhttps://sourceforge.net/p/snap7/discussion/bugfix/thread/456d76fdde/https://nvd.nist.gov
CVSSv2
CVSSv2
CVSSv3
VMScore
Recommendations:
CVE-2024-30924CVE-2024-3400overflowCVE-2024-23528CVE-2024-21338CVE-2024-3818CVE-2024-23535NULL pointer dereferenceelevation of privilege
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