CVE-2021-34423
A buffer overflow vulnerability was discovered in Zoom Client for Meetings (for Android, iOS, Linux, macOS, and Windows) before version 5.8.4, Zoom Client for Meetings for Blackberry (for Android and iOS) before version 5.8.1, Zoom Client for Meetings for intune (for Android and iOS) before version 5.8.4, Zoom Client for Meetings for Chrome OS before version 5.0.1, Zoom Rooms for Conference Room (for Android, AndroidBali, macOS, and Windows) before version 5.8.3, Controllers for Zoom Rooms (for Android, iOS, and Windows) before version 5.8.3, Zoom VDI Windows Meeting Client before version 5.8.4, Zoom VDI Azure Virtual Desktop Plugins (for Windows x86 or x64, IGEL x64, Ubuntu x64, HP ThinPro OS x64) before version 5.8.4.21112, Zoom VDI Citrix Plugins (for Windows x86 or x64, Mac Universal Installer & Uninstaller, IGEL x64, eLux RP6 x64, HP ThinPro OS x64, Ubuntu x64, CentOS x 64, Dell ThinOS) before version 5.8.4.21112, Zoom VDI VMware Plugins (for Windows x86 or x64, Mac Universal Installer & Uninstaller, IGEL x64, eLux RP6 x64, HP ThinPro OS x64, Ubuntu x64, CentOS x 64, Dell ThinOS) before version 5.8.4.21112, Zoom Meeting SDK for Android before version 5.7.6.1922, Zoom Meeting SDK for iOS before version 5.7.6.1082, Zoom Meeting SDK for macOS before version 5.7.6.1340, Zoom Meeting SDK for Windows before version 5.7.6.1081, Zoom Video SDK (for Android, iOS, macOS, and Windows) before version 1.1.2, Zoom On-Premise Meeting Connector Controller before version 4.8.12.20211115, Zoom On-Premise Meeting Connector MMR before version 4.8.12.20211115, Zoom On-Premise Recording Connector before version 5.1.0.65.20211116, Zoom On-Premise Virtual Room Connector before version 4.4.7266.20211117, Zoom On-Premise Virtual Room Connector Load Balancer before version 2.5.5692.20211117, Zoom Hybrid Zproxy before version 1.0.1058.20211116, and Zoom Hybrid MMR before version 4.6.20211116.131_x86-64. This can potentially allow a malicious actor to crash the service or application, or leverage this vulnerability to execute arbitrary code.
EPSS 3.27% · 87.8th percentile
Risk Scores
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| zoom | hybrid_mmr | 0 |
| zoom | iphone_os_meeting_sdk | 0 |
| Zoom Video Communications Inc | Zoom On-Premise Meeting Connector Controller | unspecified |
| zoom | controllers_for_zoom_rooms | 0, 0, 0 |
| Zoom Video Communications Inc | Zoom Client for Meetings (for Android, iOS, Linux, macOS, and Windows) | unspecified |
| Zoom Video Communications Inc | Zoom Client for Meetings for intune (for Android and iOS) | unspecified |
| Zoom Video Communications Inc | Zoom VDI Windows Meeting Client | unspecified |
| Zoom Video Communications Inc | Zoom Client for Meetings for Chrome OS | unspecified |
| Zoom Video Communications Inc | Zoom Meeting SDK for Android | unspecified |
| Zoom Video Communications Inc | Zoom VDI Citrix Plugins (for Windows x86 or x64, Mac Universal Installer & Uninstaller, IGEL x64, eLux RP6 x64, HP ThinPro OS x64, Ubuntu x64, CentOS x 64, Dell ThinOS) | unspecified |
| Zoom Video Communications Inc | Zoom Meeting SDK for iOS | * |
| zoom | meetings | 0, 0, 0 |
| zoom | zoom_on-premise_meeting_connector_mmr | 0 |
| zoom | android_video_sdk | 0 |
| zoom | windows_meeting_sdk | 0 |
| zoom | meetings_for_chrome_os | 0 |
| Zoom Video Communications Inc | Zoom Meeting SDK for macOS | * |
| zoom | hybrid_zproxy | 0 |
| zoom | vdi_windows_meeting_client | 0 |
| Zoom Video Communications Inc | Zoom Meeting SDK for Windows | * |
…and 28 more
Timeline
- Nov 24, 2021 CVE Published
- Nov 25, 2021 EPSS Score
- Dec 4, 2021 EPSS Score
- Jan 19, 2022 EPSS Score
- Feb 4, 2022 EPSS Score
- May 10, 2022 EPSS Score
- Jul 4, 2022 EPSS Score
- Oct 23, 2022 EPSS Score
- Dec 18, 2022 EPSS Score
- Mar 7, 2023 EPSS Score
- Apr 7, 2023 EPSS Score
- Jun 1, 2023 EPSS Score