High severity · published Apr 3, 2020
CVE-2020-11500
Zoom Client for Meetings through 4.6.9 uses the ECB mode of AES for video and audio encryption
7.5
CVSS
1.3%
EPSS
No
On KEV
Description
Zoom Client for Meetings through 4.6.9 uses the ECB mode of AES for video and audio encryption. Within a meeting, all participants use a single 128-bit key.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
None
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)1.3% · higher than 71% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
ME
Meetings · Zoom
through 4.6.9 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2020-11500
CVE.org
https://www.cve.org/CVERecord?id=CVE-2020-11500
Exploit
https://citizenlab.ca/2020/04/move-fast-roll-your-own-crypto-a-quick-look-at-the-confidentiality-of-zoom-meetings/
Press/Media Coverage
https://theintercept.com/2020/04/03/zooms-encryption-is-not-suited-for-secrets-and-has-surprising-links-to-china-researchers-discover/
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