CVE-2025-41691— CODESYS Control DoS via Unauthenticated NULL Pointer Dereference
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I. Basic Information for CVE-2025-41691
Vulnerability Information
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Vulnerability Title
CODESYS Control DoS via Unauthenticated NULL Pointer Dereference
Source: NVD (National Vulnerability Database)
Vulnerability 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.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Source: NVD (National Vulnerability Database)
Vulnerability Type
空指针解引用
Source: NVD (National Vulnerability Database)
Vulnerability Title
CODESYS Control 代码问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
CODESYS Control是德国CODESYS公司的一套工业控制程序编程软件。 CODESYS Control存在代码问题漏洞，该漏洞源于空指针取消引用，可能导致拒绝服务。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| CODESYS | Control RTE (SL) | 3.5.21.10 ~ 3.5.21.20 | - | |
| CODESYS | Control RTE (for Beckhoff CX) SL | 3.5.21.10 ~ 3.5.21.20 | - | |
| CODESYS | Control Win (SL) | 3.5.21.10 ~ 3.5.21.20 | - | |
| CODESYS | HMI (SL) | 3.5.21.10 ~ 3.5.21.20 | - | |
| CODESYS | Control for BeagleBone SL | 4.16.0.0 ~ 4.17.0.0 | - | |
| CODESYS | Control for emPC-A/iMX6 SL | 4.16.0.0 ~ 4.17.0.0 | - | |
| CODESYS | Control for IOT2000 SL | 4.16.0.0 ~ 4.17.0.0 | - | |
| CODESYS | Control for Linux ARM SL | 4.16.0.0 ~ 4.17.0.0 | - | |
| CODESYS | Control for Linux SL | 4.16.0.0 ~ 4.17.0.0 | - | |
| CODESYS | Control for PFC100 SL | 4.16.0.0 ~ 4.17.0.0 | - | |
| CODESYS | Control for PFC200 SL | 4.16.0.0 ~ 4.17.0.0 | - | |
| CODESYS | Control for PLCnext SL | 4.16.0.0 ~ 4.17.0.0 | - | |
| CODESYS | Control for Raspberry Pi SL | 4.16.0.0 ~ 4.17.0.0 | - | |
| CODESYS | Control for WAGO Touch Panels 600 SL | 4.16.0.0 ~ 4.17.0.0 | - | |
| CODESYS | Virtual Control SL | 4.16.0.0 ~ 4.17.0.0 | - |
II. Public POCs for CVE-2025-41691
| # | POC Description | Source Link | Shenlong Link |
|---|
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No public POC found.
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Same Patch Batch · CODESYS · 2025-08-04 · 3 CVEs total
| CVE-2025-41659 | 8.3 HIGH | CODESYS Control PKI Exposure Enables Remote Certificate Access |
| CVE-2025-41658 | 5.5 MEDIUM | CODESYS Toolkit Exposes Sensitive Files via Default Permissions |
IV. Related Vulnerabilities
Same vendor: CODESYS
- CVE-2026-35225
Improper timeout handling in CODESYS EtherNetIP - CVE-2026-3509
CODESYS Control Audit Log Format String DoS - CVE-2025-41660
CODESYS Control Boot Application Replacement Enables Code Ex - CVE-2026-2364
CODESYS Installer TOCTOU Privilege Escalation - CVE-2025-41700
CODESYS Development System - Deserialization of Untrusted Da
Same weakness: CWE-476
- CVE-2026-8252
Open5GS SMF smf_nsmf_handle_create_data_in_hsmf null pointer - CVE-2026-7259
Null pointer dereference in php_mb_check_encoding() via mb_e - CVE-2026-7262
NULL pointer dereference in SOAP apache:Map decoder with mis - CVE-2026-42183
Argo Workflows: SSO RBAC Delegation Nil Pointer Dereference - CVE-2026-6666
PgBouncer crash in kill_pool_logins_server_error
V. Comments for CVE-2025-41691
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