CVE-2021-30480
Zoom Chat through 2021-04-09 on Windows and macOS allows certain remote authenticated attackers...
Zoom Chat through 2021-04-09 on Windows and macOS allows certain remote authenticated attackers to execute arbitrary code without user interaction. An attacker must be within the same organization, or an external party who has been accepted as a contact. NOTE: this is specific to the Zoom Chat software, which is different from the chat feature of the Zoom Meetings and Zoom Video Webinars software.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- High
- Privileges needed
- Low
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Exploit likelihood
What each source reports
CVE List Score used
Zoom Chat through 2021-04-09 on Windows and macOS allows certain remote authenticated attackers to execute arbitrary code without user interaction. An attacker must be within the same organization, or an external party who has been accepted as a contact. NOTE: this is specific to the Zoom Chat software, which is different from the chat feature of the Zoom Meetings and Zoom Video Webinars software.
- Record
CVE-2021-30480- CVSS 3.1
- 8.5 High
CVSS:3.1/AC:H/AV:N/A:H/C:H/I:H/PR:L/S:C/UI:N - Updated
- 2026-11-02
EUVDEUVD-2021-17403
Zoom Chat through 2021-04-09 on Windows and macOS allows certain remote authenticated attackers to execute arbitrary code without user interaction. An attacker must be within the same organization, or an external party who has been accepted as a contact. NOTE: this is specific to the Zoom Chat software, which is different from the chat feature of the Zoom Meetings and Zoom Video Webinars software.
- Record
EUVD-2021-17403- CVSS 3.1
- 8.5 High
CVSS:3.1/AC:H/AV:N/A:H/C:H/I:H/PR:L/S:C/UI:N - Updated
- 2026-11-03
GitHub AdvisoriesGHSA-r6hm-86cv-xhmq
Zoom Chat through 2021-04-09 on Windows and macOS allows certain remote authenticated attackers...
Zoom Chat through 2021-04-09 on Windows and macOS allows certain remote authenticated attackers to execute arbitrary code without user interaction. An attacker must be within the same organization, or an external party who has been accepted as a contact. NOTE: this is specific to the Zoom Chat software, which is different from the chat feature of the Zoom Meetings and Zoom Video Webinars software.
- Record
GHSA-r6hm-86cv-xhmq- CVSS 3.1
- 8.8 High
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H - Updated
- 2026-11-02
NVD
Zoom Chat through 2021-04-09 on Windows and macOS allows certain remote authenticated attackers to execute arbitrary code without user interaction. An attacker must be within the same organization, or an external party who has been accepted as a contact. NOTE: this is specific to the Zoom Chat software, which is different from the chat feature of the Zoom Meetings and Zoom Video Webinars software.
- Record
CVE-2021-30480- CVSS 3.1
- 8.5 High
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H - CVSS 3.1
- 8.8 High
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H - CVSS 2.0
- 9.0 High
AV:N/AC:L/Au:S/C:C/I:C/A:C - Updated
- 2026-11-02
Affected products
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2021-30480 is a high vulnerability (CVSS 8.5) in Zoom Chat, published April 9, 2021. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 7.21%, the 94th percentile. No source names a fixed version.
References
blog.malwarebytes.com/exploits-and-vulnerabilities/2021/04/zoom-zero-day-discovery-makes-calls-safer-hackers-200000-richer
twitter.com/thezdi/status/1379855435730149378
zoom.us/feature/messaging
securityweek.com/200000-awarded-zero-click-zoom-exploit-pwn2own
zdnet.com/article/critical-zoom-vulnerability-triggers-remote-code-execution-without-user-input