CVE-2026-3509— CODESYS Control Audit Log Format String DoS
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I. Basic Information for CVE-2026-3509
Vulnerability Information
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Vulnerability Title
CODESYS Control Audit Log Format String DoS
Source: NVD (National Vulnerability Database)
Vulnerability Description
An unauthenticated remote attacker may be able to control the format string of messages processed by the Audit Log of the CODESYS Control runtime system, potentially resulting in 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
使用外部控制的格式字符串
Source: NVD (National Vulnerability Database)
Vulnerability Title
CODESYS Control runtime system 格式化字符串错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
CODESYS Control runtime system是德国CODESYS公司的一个提供工业自动化设备控制逻辑执行与运行环境的控制系统运行时软件。 CODESYS Control runtime system存在格式化字符串错误漏洞，该漏洞源于审计日志的消息格式字符串可能被控制，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 | CODESYS Control RTE (SL) | 3.5.17.0 ~ 3.5.22.0 | - | |
| CODESYS | CODESYS Control RTE (for Beckhoff CX) SL | 3.5.17.0 ~ 3.5.22.0 | - | |
| CODESYS | CODESYS Control Win (SL) | 3.5.17.0 ~ 3.5.22.0 | - | |
| CODESYS | CODESYS Runtime Toolkit | 3.5.17.0 ~ 3.5.22.0 | - | |
| CODESYS | CODESYS Control for BeagleBone SL | 4.1.0.0 ~ 4.21.0.0 | - | |
| CODESYS | CODESYS Control for emPC-A/iMX6 SL | 4.1.0.0 ~ 4.21.0.0 | - | |
| CODESYS | CODESYS Control for IOT2000 SL | 4.1.0.0 ~ 4.21.0.0 | - | |
| CODESYS | CODESYS Control for Linux ARM SL | 4.1.0.0 ~ 4.21.0.0 | - | |
| CODESYS | CODESYS Control for Linux SL | 4.1.0.0 ~ 4.21.0.0 | - | |
| CODESYS | CODESYS Control for PFC100 SL | 4.1.0.0 ~ 4.21.0.0 | - | |
| CODESYS | CODESYS Control for PFC200 SL | 4.1.0.0 ~ 4.21.0.0 | - | |
| CODESYS | CODESYS Control for PLCnext SL | 4.1.0.0 ~ 4.21.0.0 | - | |
| CODESYS | CODESYS Control for Raspberry Pi SL | 4.1.0.0 ~ 4.21.0.0 | - | |
| CODESYS | CODESYS Control for WAGO Touch Panels 600 SL | 4.1.0.0 ~ 4.21.0.0 | - | |
| CODESYS | CODESYS Virtual Control SL | 4.1.0.0 ~ 4.21.0.0 | - |
II. Public POCs for CVE-2026-3509
| # | POC Description | Source Link | Shenlong Link |
|---|
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IV. Related Vulnerabilities
Same product: CODESYS Control RTE (SL)
- CVE-2025-41660
CODESYS Control Boot Application Replacement Enables Code Ex - CVE-2025-41738
CODESYS Control - Invalid type usage in visualization - CVE-2022-47393
CODESYS: Multiple products prone to improperly restricted me - CVE-2022-47392
CODESYS: Multiple products prone to Improper Input Validatio - CVE-2022-47391
CODESYS: Multiple products prone to Improper Input Validatio
Same vendor: CODESYS
- CVE-2026-35225
Improper timeout handling in CODESYS EtherNetIP - 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 - CVE-2025-41738
CODESYS Control - Invalid type usage in visualization
Same weakness: CWE-134
- CVE-2026-44407
Remote Denial of Service Vulnerability Exists in ZTE Cloud P - CVE-2026-6539
Notepad++ 8.9.3 Format String Injection via nativeLang.xml - CVE-2026-6843
Nano: nano: format string vulnerability leads to denial of s - CVE-2026-33210
Ruby JSON has a format string injection vulnerability - CVE-2025-68648
Fortinet多款产品 格式化字符串错误漏洞
V. Comments for CVE-2026-3509
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