CVE-2026-122118
Quick assessment
Affected
Yealink AVHub
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.
在 2026 年 4 月 15 日之前的某些 Yealink 产品中，当启用 Wi-Fi 接入点（AP）功能时，系统会使用一个默认生成的 8 位数字预共享密钥（PSK），该密钥强度不足。攻击者可利用此弱点通过暴力破解获取未授权的网络访问权限，并拦截 Wi-Fi 通信流量。
Possible ATT&CK Techniques 3 AI
T1040 · Network Sniffing T1552 · Unsecured Credentials T1110 · Brute ForceAffected Version Matrix 8
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Yealink | AVHub | < 153.135.0.76 |
affected |
| Yealink | MeetingBar A10 | < 278.320.0.86 |
affected |
| Yealink | MeetingBar A40 | < 289.320.0.81 |
affected |
| Yealink | MeetingBar A50 | < 323.320.0.54 |
affected |
| Yealink | MeetingBorard C | < 328.321.0.40 |
affected |
| Yealink | SmartVision 80 | < 321.435.0.86 |
affected |
| Yealink | UVC40 E2 | < 319.410.0.66 |
affected |
| Yealink | UVC86 | < 151.435.0.66 |
affected |
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I. Basic Information for CVE-2026-122118
Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
In certain Yealink products before 2026-04-15, when the Wi-Fi AP function is enabled, a default 8-digit numeric PSK with insufficient strength is used. Attackers can exploit this weakness via brute-force attacks to gain unauthorized network access and intercept Wi-Fi traffic.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
随机数的空间太小
Source: CVE Program / CVE List V5
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| Yealink | AVHub | 0 ~ 153.135.0.76 | - |
|
| Yealink | UVC86 | 0 ~ 151.435.0.66 | - |
|
| Yealink | SmartVision 80 | 0 ~ 321.435.0.86 | - |
|
| Yealink | UVC40 E2 | 0 ~ 319.410.0.66 | - |
|
| Yealink | MeetingBorard C | 0 ~ 328.321.0.40 | - |
|
| Yealink | MeetingBar A10 | 0 ~ 278.320.0.86 | - |
|
| Yealink | MeetingBar A40 | 0 ~ 289.320.0.81 | - |
|
| Yealink | MeetingBar A50 | 0 ~ 323.320.0.54 | - |
|
II. Public POCs for CVE-2026-122118
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POC
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No public POC found.
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Other References for CVE-2026-122118 (1)
Same Patch Batch · Yealink · 2026-11-04 · 5 CVEs total
| CVE-2026-122120 | 9.0 CRITICAL | Yealink插件软件2.35.219.0前未授权文件写入漏洞 |
| CVE-2026-122148 | 8.2 HIGH | Yealink MeetingBoard Pro 前端验证绕过漏洞 |
| CVE-2026-122124 | 6.1 MEDIUM | Yealink UVC40 E2 固件越权与窃听漏洞 |
| CVE-2026-122116 | 4.3 MEDIUM | Yealink 固件 Wi-Fi 802.1X 配置访问控制漏洞 |