CVE-2023-3669— CODESYS: Missing Brute-Force protection in CODESYS Development System
Quick assessment
Affected
CODESYS CODESYS Development System
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
3s-smart Software Solutions CODESYS Development System是德国德国3S智能软件系统方案有限公司（3s-smart Software Solutions）公司的一套用于工业控制器和自动化技术领域的编程工具。 CODESYS Development System 3.5.19.20 之前版本存在安全漏洞，该漏洞源于缺少暴力保护。攻击者利用该漏洞可以无限制地尝试猜测导入对话框中的密码。
Possible ATT&CK Techniques 1 AI
T1110 · Brute Force
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I. Basic Information for CVE-2023-3669
Vulnerability Information
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Vulnerability Title
CODESYS: Missing Brute-Force protection in CODESYS Development System
Source: CVE Program / CVE List V5
Vulnerability Description
A missing Brute-Force protection in CODESYS Development System prior to 3.5.19.20 allows a local attacker to have unlimited attempts of guessing the password within an import dialog.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
过多认证尝试的限制不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
CODESYS Development System 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
3s-smart Software Solutions CODESYS Development System是德国德国3S智能软件系统方案有限公司（3s-smart Software Solutions）公司的一套用于工业控制器和自动化技术领域的编程工具。 CODESYS Development System 3.5.19.20 之前版本存在安全漏洞，该漏洞源于缺少暴力保护。攻击者利用该漏洞可以无限制地尝试猜测导入对话框中的密码。
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 Development System | 3.0.0.0 ~ 3.5.19.20 | - |
|
II. Public POCs for CVE-2023-3669
| # | POC Description | Source Link | Shenlong Link |
|---|
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Other References for CVE-2023-3669 (1)
Same Patch Batch · CODESYS · 2023-08-03 · 19 CVEs total
| CVE-2023-3663 | 8.8 HIGH | CODESYS: Missing integrity check in CODESYS Development System |
| CVE-2022-4046 | 8.8 HIGH | CODESYS: Improper memory restrictions fro CODESYS Control |
| CVE-2023-3662 | 7.3 HIGH | CODESYS: Vulnerability in CODESYS Development System allows for execution of binaries |
| CVE-2023-37546 | 6.5 MEDIUM | CODESYS: Improper Input Validation in CmpApp component |
| CVE-2023-37547 | 6.5 MEDIUM | CODESYS: Improper Input Validation in CmpApp component |
| CVE-2023-37548 | 6.5 MEDIUM | CODESYS: Improper Input Validation in CmpApp component |
| CVE-2023-37549 | 6.5 MEDIUM | CODESYS: Improper Input Validation in CmpApp component |
| CVE-2023-37550 | 6.5 MEDIUM | CODESYS: Improper Input Validation in CmpApp component |
| CVE-2023-37551 | 6.5 MEDIUM | CODESYS Files or Directories Accessible to External Parties in CmpApp |
| CVE-2023-37552 | 6.5 MEDIUM | CODESYS Improper Input Validation in CmpAppBP |
| CVE-2023-37553 | 6.5 MEDIUM | CODESYS Improper Input Validation in CmpAppBP |
| CVE-2023-37554 | 6.5 MEDIUM | CODESYS Improper Input Validation in CmpAppBP |
| CVE-2023-37555 | 6.5 MEDIUM | CODESYS Improper Input Validation in CmpAppBP |
| CVE-2023-37556 | 6.5 MEDIUM | CODESYS Improper Input Validation in CmpAppBP |
| CVE-2023-37557 | 6.5 MEDIUM | CODESYS Heap-based Buffer Overflow in multiple products |
| CVE-2023-37558 | 6.5 MEDIUM | CODESYS Improper Validation of Consistency within Input in multiple products |
| CVE-2023-37559 | 6.5 MEDIUM | CODESYS Improper Validation of Consistency within Input in multiple products |
| CVE-2023-37545 | 6.5 MEDIUM | CODESYS: Improper Input Validation in CmpApp component |
IV. Related Vulnerabilities
Same product: CODESYS Development System
-
CVE-2026-44469
Incorrect Default Permissions in CODESYS Development System -
CVE-2026-44468
Incorrect Default Permissions in CODESYS Development System -
CVE-2025-41700
CODESYS Development System - Deserialization of Untrusted Da -
CVE-2023-3662
CODESYS: Vulnerability in CODESYS Development System allows -
CVE-2023-3663
CODESYS: Missing integrity check in CODESYS Development Syst
Same vendor: CODESYS
-
CVE-2026-76992
Uncontrolled Memory Allocation in CODESYS Gateway Client -
CVE-2026-79625
Improper Synchronization in Monitoring in CODESYS Control Ru -
CVE-2026-35226
Out-of-bounds Write in CODESYS PROFINET Controller -
CVE-2026-8047
Out-of-bounds Write in CODESYS Control -
CVE-2026-8046
Incorrect Authorization in CODESYS Control
Same weakness: CWE-307
-
CVE-2026-102825
Russh: Configured server auth-attempt cap is not enforced in -
CVE-2026-102334
Nginx Proxy Manager through 2.16.0 Missing Brute-Force Prote -
CVE-2026-100678
stoatchat before 0.15.5 MFA Brute Force via Insufficient Rat -
CVE-2026-100501
Flame through 2.4.0 Brute-Force Attack via Login Endpoint -
CVE-2026-49470
GLPI: Missing Rate Limiting on Login and TOTP Verification —
V. Comments for CVE-2023-3669
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