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High severity7.5NVD Advisory· Published Oct 28, 2020· Updated Jul 9, 2026

CVE-2020-22552

CVE-2020-22552

Description

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.

AI Insight

LLM-synthesized narrative grounded in this CVE's description and references.

Affected products

3
  • Snap7/Snap72 versions
    cpe:2.3:a:snap7_project:snap7:1.4.1:*:*:*:*:*:*:*+ 1 more
    • cpe:2.3:a:snap7_project:snap7:1.4.1:*:*:*:*:*:*:*
    • (no CPE)range: =1.4.1
  • Snap7/Snap7 server componentdescription

Patches

Vulnerability mechanics

References

2

News mentions

0

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