CVE-2023-40706— Improper Restriction of Excessive Authentication Attempts in OPTO 22 SNAP PAC S1 Built-in Web Server
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I. Basic Information for CVE-2023-40706
Vulnerability Information
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Vulnerability Title
Improper Restriction of Excessive Authentication Attempts in OPTO 22 SNAP PAC S1 Built-in Web Server
Source: NVD (National Vulnerability Database)
Vulnerability Description
There is no limit on the number of login attempts in the web server for the SNAP PAC S1 Firmware version R10.3b. This could allow for a brute-force attack on the built-in web server login.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N
Source: NVD (National Vulnerability Database)
Vulnerability Type
过多认证尝试的限制不恰当
Source: NVD (National Vulnerability Database)
Vulnerability Title
OPTO 22 SNAP PAC S1 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
OPTO 22 SNAP PAC S1是美国OPTO 22公司的一种控制器。 OPTO 22 SNAP PAC S1 Firmware R10.3b版本存在安全漏洞，该漏洞源于Web服务器中的登录尝试次数没有限制，导致攻击者可以对内置Web服务器登录进行暴力攻击。
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 |
|---|---|---|---|---|
| OPTO 22 | SNAP PAC S1 | R10.3b | - |
II. Public POCs for CVE-2023-40706
| # | POC Description | Source Link | Shenlong Link |
|---|
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Same Patch Batch · OPTO 22 · 2023-08-24 · 5 CVEs total
| CVE-2023-40707 | 8.6 HIGH | Weak password requirements in OPTO 22 SNAP PAC S1 Built-in Web Server |
| CVE-2023-40710 | 6.8 MEDIUM | OPTO 22 SNAP PAC S1 资源管理错误漏洞 |
| CVE-2023-40709 | 6.8 MEDIUM | Uncontrolled Resource Consumption in OPTO 22 SNAP PAC S1 Built-In Web Server |
| CVE-2023-40708 | 5.8 MEDIUM | Improper Access Control in OPTO 22 SNAP PAC S1 |
IV. Related Vulnerabilities
Same vendor: OPTO 22
- CVE-2025-13084
Opto 22 groov View Exposure of Sensitive Information Through - CVE-2023-40710
OPTO 22 SNAP PAC S1 资源管理错误漏洞 - CVE-2023-40709
Uncontrolled Resource Consumption in OPTO 22 SNAP PAC S1 Bui - CVE-2023-40708
Improper Access Control in OPTO 22 SNAP PAC S1 - CVE-2023-40707
Weak password requirements in OPTO 22 SNAP PAC S1 Built-in W
Same weakness: CWE-307
- CVE-2026-41893
Signal K Server's WebSocket Login Endpoint Lacks Rate Limiti - CVE-2025-2514
Improper Restriction of Excessive Authentication Attempts vu - CVE-2023-54347
OpenEMR 7.0.1 Authentication Brute Force Mitigation Bypass - CVE-2026-7671
CodeWise Tornet Scooter Mobile App TwoFactor excessive authe - CVE-2026-26206
Wazuh: API brute-force protection bypass via race condition
V. Comments for CVE-2023-40706
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