In CODESYS Development System versions from 3.5.11.20 and before 3.5.19.20 a missing integrity check might allow an unauthenticated remote attacker to manipulate the content of notifications received via HTTP by the CODESYS notification server.
https://cert.vde.com/en/advisories/VDE-2023-022/
https://www.cisa.gov/news-events/ics-advisories/icsa-26-076-01
https://www.cisa.gov/news-events/ics-advisories/icsa-26-020-02
Source: Mitre, NVD
Published: 2023-08-03
Updated: 2026-06-17
Base Score: 10
Vector: CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C
Severity: Critical
Base Score: 8.8
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Severity: High
EPSS: 0.00487