CVE-2026-8047 HIGH

CVE-2026-8047: Out-of-bounds Write in CODESYS Control

Vendor Codesys
Product CODESYS Control RTE (SL)
Weakness CWE-1284
Published May 26, 2026
Last update May 26, 2026

CVSS base score

8.7/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Confidentiality
Integrity

CVSS vector

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

What the vulnerability does

01Description

The affected products perform improper length checking when parsing incoming HTTP requests, resulting in a size-limited out-of-bounds write. An unauthenticated remote attacker can exploit this flaw to cause a denial of service via a system crash on the affected device.

Key dates

02Disclosure timeline

May 26, 2026 CVE published
May 26, 2026 Record updated