CVE-2021-34571— Hard-coded Credentials in Enbra Wireless M-Bus devices
Get alerts for future matching vulnerabilitiesLog in to subscribe
I. Basic Information for CVE-2021-34571
Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗ Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.
Vulnerability Title
Hard-coded Credentials in Enbra Wireless M-Bus devices
Source: NVD (National Vulnerability Database)
Vulnerability Description
Multiple Wireless M-Bus devices by Enbra use Hard-coded Credentials in Security mode 5 without an option to change the encryption key. An adversary can learn all information that is available in Enbra EWM.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Source: NVD (National Vulnerability Database)
Vulnerability Type
使用硬编码的凭证
Source: NVD (National Vulnerability Database)
Vulnerability Title
Enbra Ewm信任管理问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Enbra Ewm是捷克Enbra公司的一个通用读数装置。使用无线电读取水表、供暖成本指标和热量表。 Enbra EWM存在信任管理问题漏洞，该漏洞源于Enbra的多个无线M-Bus设备在安全模式5中使用硬编码凭证，没有更改加密密钥的选项。攻击者可以了解Enbra EWM中提供的所有信息。
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 |
|---|---|---|---|---|
| Enbra | AT-WMBUS-16-2 | all | - | |
| Enbra | ER-AM DN 15 | ER-AM DN 15/SV all | - | |
| Enbra | EWM 1.7.29 | 03.11.2019 | - |
II. Public POCs for CVE-2021-34571
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POCPremium
No public POC found.
Login to generate AI POCIII. Intelligence Information for CVE-2021-34571
请登录查看更多情报信息。
- https://www.fit.vutbr.cz/~polcak/CVE-2021-34571.enx_refsource_CONFIRM
- https://nvd.nist.gov/vuln/detail/CVE-2021-34571
Same Patch Batch · Enbra · 2021-09-16 · 3 CVEs total
| CVE-2021-34572 | 6.5 MEDIUM | Insufficient Verification of Data Authenticity in Enbra EWM (replay attack) |
| CVE-2021-34573 | 6.2 MEDIUM | Incorrect calculation in Enbra EWM does not report backflows or no flow events |
IV. Related Vulnerabilities
Same weakness: CWE-798
- CVE-2026-7414
Hardcoded credentials in Yarbo robot firmware - CVE-2026-8032
PicoTronica e-Clinic Healthcare System ECHS echs.js hard-cod - CVE-2026-32834
Easy PayPal Events & Tickets 1.3 Authentication Bypass via Q - CVE-2026-42376
D-Link DIR-456U A1 Hardcoded Telnet Backdoor Credentials - CVE-2026-42375
D-Link DIR-600L A1 Hardcoded Telnet Backdoor Credentials
V. Comments for CVE-2021-34571
No comments yet