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.
Published · last modified .
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.
EPSS exploit prediction
EPSS: 0.015 (72.9th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 73rd percentile — 72.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.015 · newest: 0.015 · change: 0.000
Affected products
- Snap7 Project — versions 1.4.1
References
- af854a3a-2127-422b-91ae-364da2661108 (URL Repurposed, Third Party Advisory)
- sourceforge.net/p/snap7/discussion/bugfix/thread/456d76fdde/ (Third Party Advisory)
- sourceforge.net/projects/snap7/ (Exploit, Third Party Advisory)
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.