Vulnerability Report

CVE-2021-33907

RCE

Title: Zoom Client Certificate Validation Bypass

RCE

Proof Of Concept

No public PoC currently indexed for CVE-2021-33907.

CWE Category CWE-295

Published Date Sep 27, 2021

Modified Date Nov 21, 2024

Exploit Status Not Found

Score 9.8 CVSS v3.1

Exploit Probability (EPSS)

2.96%

Vulnerability Summary

CVE-2021-33907: 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.

Impacted Vendors

zoom 1

Reference Links

https://explore.zoom.us/en/trust/security/security-bulletin/ https://explore.zoom.us/en/trust/security/security-bulletin/

CVSS v3.1

Source Entity [email protected]

Severity CRITICAL

9.8

Attack Vector

NETWORK

Complexity

LOW

Privileges

N/A

Interaction

NONE

Confidentiality

N/A

Integrity

N/A

Availability

N/A

Scope

UNCHANGED

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

CVSS v2.0

Source Entity [email protected]

Severity HIGH

10.0

Access Vector

N/A

Authentication

N/A

RAW VECTOR AV:N/AC:L/Au:N/C:C/I:C/A:C

Associated Attack Patterns (CAPEC)

Total: Patterns

CVE-2021-33907 Exploits & PoCs (Proof Of Concept)

No public PoCs found in our database for this CVE.

November 21, 2024 MODIFIED

Vulnerability data or affected products updated.

September 27, 2021 PUBLISHED

Vulnerability first announced in NVD.

Attack Vector Matrix

Access Vector NETWORK

Complexity LOW

Privileges N/A

Interaction NONE

CVSS Vector String


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

Affected Stack

No specific products linked.