Zoom Workplace Desktop App up to 6.2.x buffer overflow

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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7.4$0-$5k0.00

Summaryinfo

A vulnerability was found in Zoom Workplace Desktop App, Workplace App, VDI Client, Rooms Controller, Rooms Client and Meeting SDK up to 6.2.x and classified as critical. The impacted element is an unknown function. Such manipulation leads to buffer overflow. This vulnerability is referenced as CVE-2025-27439. It is possible to launch the attack remotely. No exploit is available. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability was found in Zoom Workplace Desktop App, Workplace App, VDI Client, Rooms Controller, Rooms Client and Meeting SDK up to 6.2.x. It has been rated as critical. Affected by this issue is an unknown code. The manipulation with an unknown input leads to a buffer overflow vulnerability. Using CWE to declare the problem leads to CWE-120. The product copies an input buffer to an output buffer without verifying that the size of the input buffer is less than the size of the output buffer, leading to a buffer overflow. Impacted is confidentiality, integrity, and availability. CVE summarizes:

Buffer underflow in some Zoom Workplace Apps may allow an authenticated user to conduct an escalation of privilege via network access.

The advisory is shared for download at zoom.com. This vulnerability is handled as CVE-2025-27439 since 02/25/2025. The exploitation is known to be difficult. The attack may be launched remotely. There are neither technical details nor an exploit publicly available. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 10/23/2025).

The vulnerability scanner Nessus provides a plugin with the ID 234438 (Zoom Workplace Desktop App < 6.3.0 Buffer Underflow (ZSB-25011)), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 6.3.0 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (234438). VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Vendor

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.4
VulDB Meta Temp Score: 7.4

VulDB Base Score: 5.0
VulDB Temp Score: 4.8
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 8.8
NVD Vector: 🔍

CNA Base Score: 8.5
CNA Vector: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Buffer overflow
CWE: CWE-120 / CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 234438
Nessus Name: Zoom Workplace Desktop App < 6.3.0 Buffer Underflow (ZSB-25011)

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Workplace Desktop App/Workplace App/VDI Client/Rooms Controller/Rooms Client/Meeting SDK 6.3.0

Timelineinfo

02/25/2025 🔍
03/11/2025 +14 days 🔍
03/11/2025 +0 days 🔍
10/23/2025 +226 days 🔍

Sourcesinfo

Advisory: zoom.com
Status: Confirmed

CVE: CVE-2025-27439 (🔍)
GCVE (CVE): GCVE-0-2025-27439
GCVE (VulDB): GCVE-100-299240

Entryinfo

Created: 03/11/2025 10:28
Updated: 10/23/2025 03:08
Changes: 03/11/2025 10:28 (52), 04/16/2025 08:02 (2), 10/23/2025 03:08 (22)
Complete: 🔍
Cache ID: 216::103

VulDB is the best source for vulnerability data and more expert information about this specific topic.

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