High severity · published Aug 4, 2025
CVE-2025-41659
CODESYS Control PKI Exposure Enables Remote Certificate Access
8.3
CVSS
0.2%
EPSS
No
On KEV
Description
A low-privileged attacker can remotely access the PKI folder of the CODESYS Control runtime system and thus read and write certificates and its keys. This allows sensitive data to be extracted or to accept certificates as trusted. Although all services remain available, only unencrypted communication is possible if the certificates are deleted.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:L
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
Low
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 15% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
CR
Control RTE (SL) · CODESYS
0.0.0.0 before 3.5.21.20 · source: vendor
CR
Control RTE (for Beckhoff CX) SL · CODESYS
0.0.0.0 before 3.5.21.20 · source: vendor
CW
Control Win (SL) · CODESYS
0.0.0.0 before 3.5.21.20 · source: vendor
CF
Control for BeagleBone SL · CODESYS
0.0.0.0 before 4.17.0.0 · source: vendor
CF
Control for IOT2000 SL · CODESYS
0.0.0.0 before 4.17.0.0 · source: vendor
CF
Control for Linux ARM SL · CODESYS
0.0.0.0 before 4.17.0.0 · source: vendor
CF
Control for Linux SL · CODESYS
0.0.0.0 before 4.17.0.0 · source: vendor
CF
Control for PFC100 SL · CODESYS
0.0.0.0 before 4.17.0.0 · source: vendor
CF
Control for PFC200 SL · CODESYS
0.0.0.0 before 4.17.0.0 · source: vendor
CF
Control for PLCnext SL · CODESYS
0.0.0.0 before 4.17.0.0 · source: vendor
CF
Control for Raspberry Pi SL · CODESYS
0.0.0.0 before 4.17.0.0 · source: vendor
CF
Control for WAGO Touch Panels 600 SL · CODESYS
0.0.0.0 before 4.17.0.0 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2025-41659
CVE.org
https://www.cve.org/CVERecord?id=CVE-2025-41659
certvde.com
https://certvde.com/de/advisories/VDE-2025-051
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