CVE-2026-8047: Codesys Control For Beaglebone Sl

High severity, CVSS 7.5. EPSS: 0.6% chance of exploitation in the next 30 days.

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.

Affected products

• Codesys Codesys Control For Beaglebone Sl: from 4.15.0.0, before 4.21.0.0 (fixed in 4.21.0.0)
• Codesys Codesys Control For Empc-a/imx6 Sl: from 4.15.0.0, before 4.21.0.0 (fixed in 4.21.0.0)
• Codesys Codesys Control For IOT2000 Sl: from 4.15.0.0, before 4.21.0.0 (fixed in 4.21.0.0)
• Codesys Codesys Control For Linux Arm Sl: from 4.15.0.0, before 4.21.0.0 (fixed in 4.21.0.0)
• Codesys Codesys Control For Linux Sl: from 4.15.0.0, before 4.21.0.0 (fixed in 4.21.0.0)
• Codesys Codesys Control For PFC100 Sl: from 4.15.0.0, before 4.21.0.0 (fixed in 4.21.0.0)
• Codesys Codesys Control For PFC200 Sl: from 4.15.0.0, before 4.21.0.0 (fixed in 4.21.0.0)
• Codesys Codesys Control For Plcnext Sl: from 4.15.0.0, before 4.21.0.0 (fixed in 4.21.0.0)
• Codesys Codesys Control For Raspberry Pi Sl: from 4.15.0.0, before 4.21.0.0 (fixed in 4.21.0.0)
• Codesys Codesys Control For Wago Touch Panels 600 Sl: from 0.0.0, before 4.21.0.0 (fixed in 4.21.0.0)
• Codesys Codesys Control Rte For Beckhoff Cx Sl: from 3.5.21.0, before 3.5.22.20 (fixed in 3.5.22.20)
• Codesys Codesys Control Rte Sl: from 3.5.21.0, before 3.5.22.20 (fixed in 3.5.22.20)
• Codesys Codesys Control Win Sl: from 3.5.21.0, before 3.5.22.20 (fixed in 3.5.22.20)
• Codesys Codesys HMI Sl: from 3.5.21.0, before 3.5.22.20 (fixed in 3.5.22.20)
• Codesys Codesys Runtime Toolkit: from 3.5.21.0, before 3.5.22.20 (fixed in 3.5.22.20)
• Codesys Codesys Virtual Control Sl: from 4.15.0.0, before 4.21.0.0 (fixed in 4.21.0.0)

Published 2026-05-26. Last modified 2026-07-23.