Description
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.
References (9)
Core 9
Core References
Third Party Advisory x_refsource_misc
https://blog.malwarebytes.com/exploits-and-vulnerabilities/2021/04/zoom-zero-day-discovery-makes-calls-safer-hackers-200000-richer/
Third Party Advisory x_refsource_misc
https://twitter.com/thezdi/status/1379855435730149378
Third Party Advisory x_refsource_misc
https://twitter.com/thezdi/status/1379859851061395459
Product, Vendor Advisory x_refsource_misc
https://zoom.us/feature/messaging
Press/Media Coverage, Third Party Advisory x_refsource_misc
https://www.securityweek.com/200000-awarded-zero-click-zoom-exploit-pwn2own
Press/Media Coverage, Third Party Advisory x_refsource_misc
https://www.zdnet.com/article/critical-zoom-vulnerability-triggers-remote-code-execution-without-user-input/
Third Party Advisory, VDB Entry x_refsource_misc
https://www.zerodayinitiative.com/advisories/ZDI-21-971/
Vendor Advisory x_refsource_misc
https://explore.zoom.us/en/trust/security/security-bulletin/
Exploit, Third Party Advisory x_refsource_misc
https://sector7.computest.nl/post/2021-08-zoom/
Scores
CVSS v3
8.5
EPSS
0.0910
EPSS Percentile
92.8%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H
Details
Status
published
Products (1)
zoom/chat
< 2021-04-09
Published
Apr 09, 2021
Tracked Since
Feb 18, 2026