TI-2020-09224 Aliases CVE-2020-11500 GHSA-wcgv-3rx6-w6f9

Zoom Client for Meetings through 4.6.9 uses the ECB mode of AES for video and audio…

LOW 36CWE-327Published 2020-04-03 · Updated 2024-08-04

Key facts

Attack vector: Network
Privileges required: None
User interaction: None
Attack complexity: Low
Impact type: Information disclosure
Confidentiality · integrity · availability: High · None · None
Fix status: No fix listed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-327.

Summary

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.

Why it matters now

EPSS 0.01338 71st percentileScored 2026-11-07

Public exploit Yes 1 exploit referenceTagged by NVD

Fix No fix listed No fixed version in the sources yet

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
—	—	all versions	—	No fix listed	CNA

— Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:zoom:meetings::::::::	up to 4.6.9	Vulnerable	Zoom Video Communications, Inc.

cpe:2.3:a:zoom:meetings:*:*:*:*:*:*:*:* Versions up to 4.6.9 Vulnerable ·Zoom Video Communications, Inc.

Remediation

No fixed version listed by the sources yet.

Timeline

2026-10-02 Threatist record created from CVE-2020-11500
2026-10-03 Alias added: GHSA-wcgv-3rx6-w6f9

References

Exploit 1

https://citizenlab.ca/2020/04/move-fast-roll-your-own-crypto-a-quick-look-at-the-confidentiality-of-zoom-meetings/

Advisory 1

https://theintercept.com/2020/04/03/zooms-encryption-is-not-suited-for-secrets-and-has-surprising-links-to-china-researchers-discover/

TI-2021-13217 Improper certificate validation in Zoom Client for Meetings for Windows CVSS 3.1CRITICAL 9.8
TI-2021-13457 Buffer overflow in Zoom client and other products CVSS 3.1CRITICAL 9.8
TI-2022-11393 Improper URL parsing in Zoom Clients CVSS 3.1CRITICAL 9.6
TI-2022-07034 Improperly constrained session cookies in Zoom Client for Meetings CVSS 3.1CRITICAL 9.1
TI-2022-07035 Update package downgrade in Zoom Client for Meetings for Windows CVSS 3.1HIGH 8.8
TI-2022-07033 Improper XML Parsing in Zoom Client for Meetings CVSS 3.1HIGH 8.1

See all 36 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences