CVE-2018-8836

Description

Wago 750 Series PLCs with firmware version 10 and prior include a remote attack may take advantage of an improper implementation of the 3 way handshake during a TCP connection affecting the communications with commission and service tools. Specially crafted packets may also be sent to Port 2455/TCP/IP, used in Codesys management software, which may result in a denial-of-service condition of communications with commissioning and service tools.

Category

5.3
CVSS
Severity: Medium
CVSS 3.0 •
CVSS 2.0 •
EPSS 3.32% Top 15%
Vendor Advisory wago.com
Affected: WAGO WAGO 750 Series
Published at:
Updated at:

References

Link Tags
http://www.securityfocus.com/bid/103726 vdb entry third party advisory
https://ics-cert.us-cert.gov/advisories/ICSA-18-088-01 third party advisory us government resource
https://www.wago.com/medias/Vulnerability-in-the-WAGO-Ethernet-TCP-IP-driver.pdf?context=bWFzdGVyfHJvb3R8MjgxNDk0fGFwcGxpY2F0aW9uL3BkZnxoOTcvaDhkLzkxNTAyMjMyMjA3NjYucGRmfGRlNWQ4ODc0NTE5M2UyNTUwNTIyNDRlOWFkNWI2YjNkMzg0YTVhYzlmYTBjNzM4MDdmNmYzOTM5M2ZlMGEzNzE vendor advisory

Frequently Asked Questions

What is the severity of CVE-2018-8836?
CVE-2018-8836 has been scored as a medium severity vulnerability.
How to fix CVE-2018-8836?
To fix CVE-2018-8836, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2018-8836 being actively exploited in the wild?
It is possible that CVE-2018-8836 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~3% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2018-8836?
CVE-2018-8836 affects WAGO WAGO 750 Series.
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