CVE-2021-25676
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I. Basic Information for CVE-2021-25676
Vulnerability Information
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Vulnerability Title
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Description
A vulnerability has been identified in RUGGEDCOM RM1224 (V6.3), SCALANCE M-800 (V6.3), SCALANCE S615 (V6.3), SCALANCE SC-600 (All Versions >= V2.1 and < V2.1.3). Multiple failed SSH authentication attempts could trigger a temporary Denial-of-Service under certain conditions. When triggered, the device will reboot automatically.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
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
Siemens RUGGEDCOM 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Siemens RUGGEDCOM是德国西门子（Siemens）公司的一个通信设备。为电力，交通，石油和天然气及其他行业提供快速可靠的通信。 Siemens RUGGEDCOM 存在安全漏洞，该漏洞源于SSH失败身份验证来触发致命错误，以触发拒绝服务。
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 |
|---|---|---|---|---|
| Siemens | RUGGEDCOM RM1224 | V6.3 | - | |
| Siemens | SCALANCE M-800 | V6.3 | - | |
| Siemens | SCALANCE S615 | V6.3 | - | |
| Siemens | SCALANCE SC-600 | All Versions >= V2.1 and < V2.1.3 | - |
II. Public POCs for CVE-2021-25676
| # | POC Description | Source Link | Shenlong Link |
|---|
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- https://us-cert.cisa.gov/ics/advisories/icsa-21-068-02x_refsource_CONFIRM
- https://nvd.nist.gov/vuln/detail/CVE-2021-25676
Same Patch Batch · Siemens · 2021-03-15 · 14 CVEs total
| CVE-2020-25236 | 5.5 MEDIUM | Siemens LOGO! 8 BM 安全漏洞 |
| CVE-2021-25667 | Siemens RUGGEDCOM RM1224 缓冲区错误漏洞 | |
| CVE-2021-25672 | 西门子 Mendix 安全漏洞 | |
| CVE-2021-25673 | Siemens SIMATIC 安全漏洞 | |
| CVE-2021-25674 | Siemens SIMATIC 代码问题漏洞 | |
| CVE-2021-25675 | Siemens SIMATIC 数字错误漏洞 | |
| CVE-2021-27380 | Siemens Solid Edge 缓冲区错误漏洞 | |
| CVE-2021-27381 | Siemens Solid Edge 缓冲区错误漏洞 | |
| CVE-2020-25239 | Siemens SINEMA Remote Connect Server 安全漏洞 | |
| CVE-2020-25240 | Siemens SINEMA Remote Connect Server 安全漏洞 | |
| CVE-2020-25241 | Siemens SIMATIC MV400 安全漏洞 | |
| CVE-2020-28385 | Siemens Solid Edge 缓冲区错误漏洞 | |
| CVE-2020-28387 | Siemens Solid Edge 代码问题漏洞 |
IV. Related Vulnerabilities
Same weakness: CWE-307
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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-2021-25676
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