CVE-2025-49464— Zoom Clients for Windows- Classic Buffer Overflow
Quick assessment
Affected
Zoom Communications Inc. Zoom Clients for Windows
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.
Zoom Client是美国Zoom公司的一款支持多种平台的视频会议客户端应用程序。 Zoom Client存在安全漏洞，该漏洞源于缓冲区溢出，可能导致拒绝服务攻击。
Possible ATT&CK Techniques 1 AI
T1499 · Endpoint Denial of Service
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I. Basic Information for CVE-2025-49464
Vulnerability Information
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Vulnerability Title
Zoom Clients for Windows- Classic Buffer Overflow
Source: CVE Program / CVE List V5
Vulnerability Description
Classic buffer overflow in certain Zoom Clients for Windows may allow an authorised user to conduct a denial of service via network access.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
未进行输入大小检查的缓冲区拷贝(传统缓冲区溢出)
Source: CVE Program / CVE List V5
Vulnerability Title
Zoom Client 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Zoom Client是美国Zoom公司的一款支持多种平台的视频会议客户端应用程序。 Zoom Client存在安全漏洞，该漏洞源于缓冲区溢出，可能导致拒绝服务攻击。
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 |
|---|---|---|---|---|
| Zoom Communications Inc. | Zoom Clients for Windows | 0 ~ 6.4.5 | - |
|
II. Public POCs for CVE-2025-49464
| # | POC Description | Source Link | Shenlong Link |
|---|
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Other References for CVE-2025-49464 (1)
Same Patch Batch · Zoom Communications Inc. · 2025-07-10 · 5 CVEs total
| CVE-2025-46788 | 7.4 HIGH | Zoom Workplace for Linux - Improper Certificate Validation |
| CVE-2025-49463 | 6.5 MEDIUM | Zoom Clients for iOS - Insufficient Control Flow Management |
| CVE-2025-46789 | 6.5 MEDIUM | Zoom Clients for Windows - Classic Buffer Overflow |
| CVE-2025-49462 | 3.5 LOW | Zoom Clients - Cross-site Scripting |
IV. Related Vulnerabilities
Same vendor: Zoom Communications Inc.
-
CVE-2026-30902
Zoom Clients for Windows - Improper Privilege Management -
CVE-2026-30901
Zoom Rooms for Windows - Improper Input Validation -
CVE-2026-30900
Zoom Workplace Clients for Windows - Improper Check -
CVE-2026-22844
Zoom Node Deployments - Command Injection -
CVE-2025-67460
Zoom Rooms for Windows - Software Downgrade Protection Mecha
Same weakness: CWE-120
-
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V. Comments for CVE-2025-49464
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