What is the CVSS score of CVE-2025-30664?

CVE-2025-30664 has a CVSS 3.1 base score of 6.6 (Medium). CVSS vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:N. EPSS exploitation probability: 0.1%.

How to fix or mitigate CVE-2025-30664?

Within 30 days: Identify affected systems and apply vendor patches as part of regular patch cycle. Verify Content-Security-Policy and output encoding.

Zoom CVE-2025-30664

MEDIUM

Cross-site Scripting (XSS) (CWE-79)

2025-05-14 security@zoom.us

XSS Privilege Escalation Zoom Workplace Desktop Meeting Software Development Kit Rooms Rooms Controller Workplace Workplace Virtual Desktop Infrastructure

6.6

CVSS 3.1 · NVD

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Vulnerability Assessment

Weakness	CWE CWE-79 OWASP Top 10:2025 A05:2025 - Injection ASVS 5.0 V1 - Encoding and Sanitization Output encoding, context-aware escaping MITRE ATT&CK 2 techniques across 2 tactics: Initial Access, Execution The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up. Sign in to read
Impact	CVSS score of 6.6 (MEDIUM). Attack characteristics: local attack vector, low complexity, low privileges required, user interaction required. EPSS exploitation probability: 0.07%.
Exploit ScenarioDerived	A local attacker with access to the system could inject malicious scripts into web pages viewed by other users.

This Month Plan within 30 days. Why: MEDIUM severity (CVSS 4.0-6.9).

No patch listed yet 0.1% exploitation probability (EPSS)

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AnalysisAIv1 – Mar 28, 2026

Cross-site scripting in some Zoom Workplace Apps may allow an authenticated user to conduct an escalation of privilege via local access. Rated medium severity (CVSS 6.6), this vulnerability is low attack complexity. No vendor patch available.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Sanitize all user input, use Content-Security-Policy headers, encode output contextually (HTML, JS, URL). Use frameworks with built-in XSS protection.

Affects your stack

Find out whether the stacks and servers you run are on an affected version.

Checking this CVE against your own stacks and servers is part of the Basic plan and up.

Technical ContextAI · show details

This vulnerability is classified as Cross-Site Scripting (XSS) (CWE-79), which allows attackers to inject malicious scripts into web pages viewed by other users. Cross-site scripting in some Zoom Workplace Apps may allow an authenticated user to conduct an escalation of privilege via local access. Affected products include: Zoom Meeting Software Development Kit, Zoom Rooms, Zoom Rooms Controller, Zoom Workplace, Zoom Workplace Desktop.

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Exploit and PoC references, threat intelligence from 22 sources

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Severity by source

NVD PRIMARY 6.6 MEDIUM

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

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

Required

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

None

DescriptionCVE.org

Cross-site scripting in some Zoom Workplace Apps may allow an authenticated user to conduct an escalation of privilege via local access.

Executive ViewAI

Why It Matters

CVE-2025-30664 presents notable security risk, a cross-site scripting vulnerability rated CVSS 6.6. Attackers could inject scripts to steal sessions or perform actions as authenticated users. Organizations should apply vendor updates when available and monitor for exploitation.

Business Impact: Moderate

Compensating Controls

Apply vendor patch. If patching is delayed: implement CSP headers, enable HttpOnly cookies, deploy WAF XSS rules.

Threat Intelligence Overview

EPSS Score

0.1%

Top 78% exploitable

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue

Severity MEDIUM

CISA KEV No

Public POC No

EPSS 0.1%

Patch available No

Active threat No

Deciding rule

MEDIUM severity (CVSS 4.0-6.9)

What every action level means

Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.

Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.

This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.

This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.

Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

SSVC AssessmentENISA

Exploitation· derived

None

System Exposure· derived

Small

Automatable· derived

Priority Score

Low Medium High Critical

KEV: 0

EPSS: 0

CVSS: +33

PoC: 0

Weaponized: 0

Threat intel: 0

Gov advisory: 0

Attack Technique

Cross-Site Scripting MEDIUM

Cross-Site Scripting occurs when an application accepts untrusted data and sends it to a web browser without proper validation or encoding.

Privilege Escalation HIGH

Privilege escalation occurs when an attacker leverages flaws in access control mechanisms to gain permissions beyond what they were originally granted.

Affected Products (CPE)CVE.org

cpe:2.3:a:zoom:meeting_software_development_kit:*:*:*:*:*:android:*:*

cpe:2.3:a:zoom:meeting_software_development_kit:*:*:*:*:*:iphone_os:*:*

cpe:2.3:a:zoom:meeting_software_development_kit:*:*:*:*:*:linux:*:*

cpe:2.3:a:zoom:meeting_software_development_kit:*:*:*:*:*:macos:*:*

cpe:2.3:a:zoom:meeting_software_development_kit:*:*:*:*:*:windows:*:*

cpe:2.3:a:zoom:rooms:*:*:*:*:*:android:*:*

cpe:2.3:a:zoom:rooms:*:*:*:*:*:ipados:*:*

cpe:2.3:a:zoom:rooms:*:*:*:*:*:macos:*:*

cpe:2.3:a:zoom:rooms:*:*:*:*:*:windows:*:*

cpe:2.3:a:zoom:rooms_controller:*:*:*:*:*:android:*:*

cpe:2.3:a:zoom:rooms_controller:*:*:*:*:*:linux:*:*

cpe:2.3:a:zoom:rooms_controller:*:*:*:*:*:macos:*:*

cpe:2.3:a:zoom:rooms_controller:*:*:*:*:*:windows:*:*

cpe:2.3:a:zoom:workplace:*:*:*:*:*:android:*:*

cpe:2.3:a:zoom:workplace:*:*:*:*:*:iphone_os:*:*

cpe:2.3:a:zoom:workplace_desktop:*:*:*:*:*:linux:*:*

cpe:2.3:a:zoom:workplace_desktop:*:*:*:*:*:macos:*:*

cpe:2.3:a:zoom:workplace_desktop:*:*:*:*:*:windows:*:*

cpe:2.3:a:zoom:workplace_virtual_desktop_infrastructure:*:*:*:*:*:windows:*:*

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The Zoom Client before 4.4.53932.0709 on macOS allows remote code execution, a different vulnerability than CVE-2019-134

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airhost.exe in Zoom Client for Meetings 4.6.11 uses 3423423432325249 as the Initialization Vector (IV) for AES-256 CBC e

CVE-2020-11876 HIGH This Week POC

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airhost.exe in Zoom Client for Meetings 4.6.11 uses the SHA-256 hash of 0123425234234fsdfsdr3242 for initialization of a

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Zoom Client for Meetings through 4.6.9 uses the ECB mode of AES for video and audio encryption. Rated high severity (CVS

Same weakness CWE-79 – Cross-site Scripting (XSS)

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CVE-2020-3580 MEDIUM POC

6.1

CVE-2013-7389 MEDIUM POC

4.3

CVE-2021-25299 MEDIUM POC

6.1

CVE-2014-2120 MEDIUM

6.1

CVE-2023-40000 HIGH POC

8.3

CVE-2016-8581 MEDIUM POC

6.1

CVE-2013-5223 MEDIUM POC

5.4

CVE-2025-52367 MEDIUM POC

5.4

Same technique XSS

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CVE-2017-9248 CRITICAL POC

9.8

CVE-2013-1710 CRITICAL POC

10.0

CVE-2024-52875 HIGH POC

8.8

References

Advisories & patches

ADVISORY https://www.zoom.com/en/trust/security-bulletin/zsb-25017

Search Externally

GitHub PoC

Exploit-DB PacketStorm Snyk Rapid7 Nuclei Templates Trickest PoC

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