What is CVE-2020-22552?

CVE-2020-22552 is a high-severity vulnerability in Snap7 Project. CVSS score: 7.5/10. Published 2020-10-28.

How severe is CVE-2020-22552?

High severity. CVSS v3 base score is 7.5 out of 10.

Vulnerability in Snap7 Project

CVE-2020-22552

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.

EPSS: 0.015 (71.1th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

Affected products

Snap7_project Snap7 — versions 1.4.1
N/a — versions n/a

References

af854a3a-2127-422b-91ae-364da2661108 (URL Repurposed, x_refsource_MISC, Third Party Advisory)
cve@mitre.org (Third Party Advisory, x_refsource_MISC)
cve@mitre.org (Exploit, Third Party Advisory, x_refsource_MISC)

Frequently asked questions

What is CVE-2020-22552?: CVE-2020-22552 is a high-severity vulnerability in Snap7 Project. CVSS score: 7.5/10. Published 2020-10-28.
How severe is CVE-2020-22552?: High severity. CVSS v3 base score is 7.5 out of 10.