CVE-2021-33907

CVSS V2 High 10 CVSS V3 Critical 9.8

Description

The Zoom Client for Meetings for Windows in all versions before 5.3.0 fails to properly validate the certificate information used to sign .msi files when performing an update of the client. This could lead to remote code execution in an elevated privileged context.

Overview

CVE ID
CVE-2021-33907

Assigner
security@zoom.us

Vulnerability Status
Analyzed

Published Version
2021-09-27T14:15:08

Last Modified Date
2021-10-06T19:01:09

Weakness Enumerations

CWE	URL
CWE-295	http://cwe.mitre.org/data/definitions/295.html

CPE Configuration (Product)

CPE	Vulnerable	Operator	Version Start	Version End
cpe:2.3:a:zoom:meetings::::::windows::*	1	OR		5.3.0

CVSS Version 2

Version
2.0

Vector String
AV:N/AC:L/Au:N/C:C/I:C/A:C

Access Vector
NETWORK

Access Compatibility
LOW

Authentication
NONE

Confidentiality Impact
COMPLETE

Integrity Impact
COMPLETE

Availability Impact
COMPLETE

Base Score
10

Severity
HIGH

Exploitability Score
10

Impact Score
10

CVSS Version 3

Version
3.1

Vector String
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector
NETWORK

Attack Compatibility
LOW

Privileges Required
NONE

User Interaction
NONE

Scope
UNCHANGED

Confidentiality Impact
HIGH

Availability Impact
HIGH

Base Score
9.8

Base Severity
CRITICAL

Exploitability Score
3.9

Impact Score
5.9

References

Reference URL	Reference Tags
https://explore.zoom.us/en/trust/security/security-bulletin/	Vendor Advisory

Sources

Source Name	Source URL
NIST	https://nvd.nist.gov/vuln/detail/CVE-2021-33907
MITRE	https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-33907

History

Created	Old Value	New Value	Data Type	Notes
2022-05-10 06:52:18				Added to TrackCVE
2022-12-05 11:19:48	2021-09-27T14:15Z	2021-09-27T14:15:08	CVE Published Date	updated
2022-12-05 11:19:48		2021-10-06T19:01:09	CVE Modified Date	updated
2022-12-05 11:19:48		Analyzed	Vulnerability Status	updated