Vulnerability in Wago 750-829
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. 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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L.
EPSS exploit prediction
EPSS: 0.037 (89.4th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 89th percentile — 89.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.036 · newest: 0.037 · change: +0.001
Affected products
Weakness classification (CWE)
References
- www.securityfocus.com/bid/103726 (VDB Entry, Third Party Advisory, vdb-entry)
- ics-cert.us-cert.gov/advisories/ICSA-18-088-01 (US Government Resource, Third Party Advisory)
- www.wago.com/medias/Vulnerability-in-the-WAGO-Ethernet-TCP-IP-driver.pdf (Vendor Advisory)
Frequently asked questions
- What is CVE-2018-8836?
- CVE-2018-8836 is a medium-severity vulnerability in Wago 750-829, classified under Improper Resource Shutdown or Release. CVSS score: 5.3/10. Published 2018-04-03.
- How severe is CVE-2018-8836?
- Medium severity. CVSS v3 base score is 5.3 out of 10.