High severity · published Aug 4, 2025
CVE-2025-41691
CODESYS Control DoS via Unauthenticated NULL Pointer Dereference
7.5
CVSS
0.6%
EPSS
No
On KEV
Description
An unauthenticated remote attacker may trigger a NULL pointer dereference in the affected CODESYS Control runtime systems by sending specially crafted communication requests, potentially leading to a denial-of-service (DoS) condition.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.6% · higher than 48% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
CR
Control RTE (SL) · CODESYS
3.5.21.10 before 3.5.21.20 · source: vendor
CR
Control RTE (for Beckhoff CX) SL · CODESYS
3.5.21.10 before 3.5.21.20 · source: vendor
CW
Control Win (SL) · CODESYS
3.5.21.10 before 3.5.21.20 · source: vendor
CF
Control for BeagleBone SL · CODESYS
4.16.0.0 before 4.17.0.0 · source: vendor
CF
Control for IOT2000 SL · CODESYS
4.16.0.0 before 4.17.0.0 · source: vendor
CF
Control for Linux ARM SL · CODESYS
4.16.0.0 before 4.17.0.0 · source: vendor
CF
Control for Linux SL · CODESYS
4.16.0.0 before 4.17.0.0 · source: vendor
CF
Control for PFC100 SL · CODESYS
4.16.0.0 before 4.17.0.0 · source: vendor
CF
Control for PFC200 SL · CODESYS
4.16.0.0 before 4.17.0.0 · source: vendor
CF
Control for PLCnext SL · CODESYS
4.16.0.0 before 4.17.0.0 · source: vendor
CF
Control for Raspberry Pi SL · CODESYS
4.16.0.0 before 4.17.0.0 · source: vendor
CF
Control for WAGO Touch Panels 600 SL · CODESYS
4.16.0.0 before 4.17.0.0 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2025-41691
CVE.org
https://www.cve.org/CVERecord?id=CVE-2025-41691
certvde.com
https://certvde.com/de/advisories/VDE-2025-070
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