CVE-2021-30480

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.

CVSS v3.1 NVD

8.8 HIGHCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CVSS v3.1 MITRE

8.5 HIGHCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H

CVSS v2.0 NVD

9.0 HIGHAV:N/AC:L/Au:S/C:C/I:C/A:C

EPSS

5.84% chance of exploitation in the next 30 days, 93rd percentile

Published

2021-04-09

Updated

2024-08-03

Proof-of-concept exploits (1)

• https://www.securityweek.com/200000-awarded-zero-click-zoom-exploit-pwn2own

Security advisories

• https://explore.zoom.us/en/trust/security/security-bulletin
• https://zoom.us/feature/messaging
• https://blog.malwarebytes.com/exploits-and-vulnerabilities/2021/04/zoom-zero-day-discover…
• https://sector7.computest.nl/post/2021-08-zoom
• https://twitter.com/thezdi/status/1379855435730149378
• https://twitter.com/thezdi/status/1379859851061395459
• https://www.zdnet.com/article/critical-zoom-vulnerability-triggers-remote-code-execution-…
• https://www.zerodayinitiative.com/advisories/ZDI-21-971

References

• CVE Record
• NVD entry