Improper signature verification in Zoom Clients
Priority LOW 29CWE-347Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-347.
Summary
Improper authentication in some Zoom clients before version 5.16.5 may allow an authenticated user to conduct a denial of service via network access.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00403 34th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Zoom Video Communications, Inc. | Zoom Clients | See references | — | No fix listed | CNA |
- Zoom Clients VendorZoom Video Communications, Inc. Affected See references Fixed in — No fix listed CNA
CPE configurations NVD · 8
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:zoom:meeting_software_development_kit:*:*:*:*:*:*:*:* | before 5.16.5 | Vulnerable | Zoom Video Communications, Inc. |
| cpe:2.3:a:zoom:video_software_development_kit:*:*:*:*:*:*:*:* | before 5.16.5 | Vulnerable | Zoom Video Communications, Inc. |
| cpe:2.3:a:zoom:virtual_desktop_infrastructure:*:*:*:*:*:*:*:* | before 5.14.14; 5.15.0 to before 5.15.12 | Vulnerable | Zoom Video Communications, Inc. |
| cpe:2.3:a:zoom:zoom:*:*:*:*:*:android:*:* | before 5.16.5 | Vulnerable | Zoom Video Communications, Inc. |
| cpe:2.3:a:zoom:zoom:*:*:*:*:*:iphone_os:*:* | before 5.16.5 | Vulnerable | Zoom Video Communications, Inc. |
| cpe:2.3:a:zoom:zoom:*:*:*:*:*:linux:*:* | before 5.16.5 | Vulnerable | Zoom Video Communications, Inc. |
| cpe:2.3:a:zoom:zoom:*:*:*:*:*:macos:*:* | before 5.16.5 | Vulnerable | Zoom Video Communications, Inc. |
| cpe:2.3:a:zoom:zoom:*:*:*:*:*:windows:*:* | before 5.16.5 | Vulnerable | Zoom Video Communications, Inc. |
- cpe:2.3:a:zoom:meeting_software_development_kit:*:*:*:*:*:*:*:* Versions before 5.16.5 Vulnerable ·Zoom Video Communications, Inc.
- cpe:2.3:a:zoom:video_software_development_kit:*:*:*:*:*:*:*:* Versions before 5.16.5 Vulnerable ·Zoom Video Communications, Inc.
- cpe:2.3:a:zoom:virtual_desktop_infrastructure:*:*:*:*:*:*:*:* Versions before 5.14.14; 5.15.0 to before 5.15.12 Vulnerable ·Zoom Video Communications, Inc.
- cpe:2.3:a:zoom:zoom:*:*:*:*:*:android:*:* Versions before 5.16.5 Vulnerable ·Zoom Video Communications, Inc.
- cpe:2.3:a:zoom:zoom:*:*:*:*:*:iphone_os:*:* Versions before 5.16.5 Vulnerable ·Zoom Video Communications, Inc.
- cpe:2.3:a:zoom:zoom:*:*:*:*:*:linux:*:* Versions before 5.16.5 Vulnerable ·Zoom Video Communications, Inc.
- cpe:2.3:a:zoom:zoom:*:*:*:*:*:macos:*:* Versions before 5.16.5 Vulnerable ·Zoom Video Communications, Inc.
- cpe:2.3:a:zoom:zoom:*:*:*:*:*:windows:*:* Versions before 5.16.5 Vulnerable ·Zoom Video Communications, Inc.
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2023-49646
- 2026-10-03 Alias added: GHSA-786h-39x7-jgmj
- 2026-11-02 CISA SSVC decision points changed
References
More Zoom Video Communications, Inc. Meeting Software Development Kit vulnerabilities
- TI-2024-16222 Zoom Desktop Client for Windows, Zoom VDI Client for Windows, and Zoom Meeting SDK for… CVSS 3.1CRITICAL 9.8
- TI-2025-31505 Zoom Clients for Windows - Untrusted Search Path CVSS 3.1CRITICAL 9.6
- TI-2025-00112 Zoom Workplace App for Linux - Type Confusion CVSS 3.1CRITICAL 9.8
- TI-2025-40081 Zoom Workplace for Android - Improper Authorization Handling CVSS 3.1CRITICAL 9.8
- TI-2025-38730 Zoom Workplace Clients - Inefficient Regular Expression Complexity CVSS 3.1CRITICAL 9.8
- TI-2023-23333 Untrusted search path in Zoom Desktop Client for Windows, Zoom VDI Client for Windows and… CVSS 3.1HIGH 8.8
Sources
- CVE-2023-49646 · CVE Program
- CVE-2023-49646 · NVD
- FIRST EPSS
- GHSA-786h-39x7-jgmj · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences