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.

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.

EPSS: 0.036 (88.3th percentile) — read the EPSS interpretation.

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.

Affected products

Weakness classification (CWE)

CWE-404 — Improper Resource Shutdown or Release

References

ics-cert@hq.dhs.gov (VDB Entry, Third Party Advisory, vdb-entry, x_refsource_BID)
ics-cert@hq.dhs.gov (US Government Resource, Third Party Advisory, x_refsource_MISC)
ics-cert@hq.dhs.gov (x_refsource_CONFIRM, 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.