CVE-2025-41660: CODESYS Control RTE (SL) · Incorrect Resource Transfer Between Spheres
Affects CODESYS Control RTE (SL)Source CVE Database V5
Not known to be exploited · CVSS 8.8 High : upgrade to 3.5.22.0 soon.
Data as of 30 Oct 2026, 11:52 UTC
- EPSS
- 0.4% chance of exploitation in 30 days – higher than 38% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
- Patch
- Available – fixed in 3.5.22.0, 4.21.0.0
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HExploitation evidence
Disclosed: evidence found.
CVE published 24 Mar 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 30 Oct 2026.
What to do
Upgrade CODESYS to 3.5.22.0 (Control RTE (SL), Control RTE (for Beckhoff CX) SL, Control Win (SL), HMI (SL), Runtime Toolkit) or 4.21.0.0 (Control for BeagleBone SL, Control for emPC-A/iMX6 SL, Control for IOT2000 SL, Control for Linux ARM SL, Control for Linux SL, Control for PFC100 SL, Control for PFC200 SL, Control for PLCnext SL, Control for Raspberry Pi SL, Control for WAGO Touch Panels 600 SL, Virtual Control SL).
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| CODESYSCODESYS Control RTE (SL) | Affected
| Fixed in
|
| CODESYSCODESYS Control RTE (for Beckhoff CX) SL | Affected
| Fixed in
|
| CODESYSCODESYS Control Win (SL) | Affected
| Fixed in
|
| CODESYSCODESYS HMI (SL) | Affected
| Fixed in
|
| CODESYSCODESYS Runtime Toolkit | Affected
| Fixed in
|
| CODESYSCODESYS Control for BeagleBone SL | Affected
| Fixed in
|
AI-suggested
If you cannot patch yet, restrict network access to the affected system and monitor for suspicious activity related to boot application modifications.
Description
CVE-2025-41660 is a high-severity vulnerability in CODESYS Control RTE (SL) that allows a low-privileged remote attacker to replace the boot application of the runtime system. This unauthorized modification can lead to execution of arbitrary code with potentially full control over the affected system. The vulnerability is classified under CWE-669, indicating incorrect resource transfer between security spheres.