CVE-2018-8836
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.
Does this matter?
Lower severity and a low EPSS score (3.71%). Track it; it rarely justifies an emergency change on its own.
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.
- CVSS 3.0
- 5.3 MEDIUMCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
- EPSS
- 3.71% probability · 89th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-404
- Affected
- wago/750-880 firmware · wago/750-881 firmware · wago/750-852 firmware · wago/750-882 firmware · wago/750-885 firmware · wago/750-831 firmware · wago/750-889 firmware · wago/750-829 firmware
- Source
- ics-cert@hq.dhs.gov
References
- http://www.securityfocus.com/bid/103726Third Party Advisory, VDB Entry
- https://ics-cert.us-cert.gov/advisories/ICSA-18-088-01Third Party Advisory, US Government Resource
- https://www.wago.com/medias/Vulnerability-in-the-WAGO-Ethernet-TCP-IP-driver.pdf?context=bWFzdGVyfHJvb3R8MjgxNDk0fGFwcGxpY2F0aW9uL3BkZnxoOTcvaDhkLzkxNTAyMjMyMjA3NjYucGRmfGRlNWQ4ODc0NTE5M2UyNTUwNTIyNDRlOWFkNWI2YjNkMzg0YTVhYzlmYTBjNzM4MDdmNmYzOTM5M2ZlMGEzNzEVendor Advisory
- http://www.securityfocus.com/bid/103726Third Party Advisory, VDB Entry
- https://ics-cert.us-cert.gov/advisories/ICSA-18-088-01Third Party Advisory, US Government Resource
- https://www.wago.com/medias/Vulnerability-in-the-WAGO-Ethernet-TCP-IP-driver.pdf?context=bWFzdGVyfHJvb3R8MjgxNDk0fGFwcGxpY2F0aW9uL3BkZnxoOTcvaDhkLzkxNTAyMjMyMjA3NjYucGRmfGRlNWQ4ODc0NTE5M2UyNTUwNTIyNDRlOWFkNWI2YjNkMzg0YTVhYzlmYTBjNzM4MDdmNmYzOTM5M2ZlMGEzNzEVendor Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.