Improper Authorization in Handler for Custom URL Scheme in Zoom Workplace before version…
Priority MEDIUM 42CWE-939Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Fixed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA.
Summary
Improper Authorization in Handler for Custom URL Scheme in Zoom Workplace before version 7.0.4 for Android and before 7.0.3 for iOS may allow an unauthenticated user to conduct an escalation of privilege via network access.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00231 13th percentileScored 2026-11-07
Fix Fixed Zoom Workplace (Zoom Communications): 7.0.4
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Zoom Video Communications, Inc. | Zoom Workplace | before 7.0.4 | 7.0.4 | Patch available | CNA |
- Zoom Workplace VendorZoom Video Communications, Inc. Affected before 7.0.4 Fixed in 7.0.4 Patch available CNA
CPE configurations NVD · 2
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:zoom:workplace:*:*:*:*:*:iphone_os:*:* | before 7.0.3 | Vulnerable | Zoom Video Communications, Inc. |
| cpe:2.3:a:zoom:workplace:*:*:*:*:*:android:*:* | before 7.0.4 | Vulnerable | Zoom Video Communications, Inc. |
- cpe:2.3:a:zoom:workplace:*:*:*:*:*:iphone_os:*:* Versions before 7.0.3 Vulnerable ·Zoom Video Communications, Inc.
- cpe:2.3:a:zoom:workplace:*:*:*:*:*:android:*:* Versions before 7.0.4 Vulnerable ·Zoom Video Communications, Inc.
Remediation
- Fix · CNA Zoom Workplace (Zoom Communications) Fixed in 7.0.4
Fixed in the same release
Records fixed by the same vendor advisory or release, as the CNA lists them.
- Release ·
Zoom Workplace 7.0.4
2 records Highest priority Priority MEDIUM 1 MEDIUM, 1 LOW
Other records, highest priority first
- TI-2026-38494 Improper Authorization in Handler for Custom URL Scheme in Zoom Workplace before version…Priority LOW 37
Timeline
- 2026-10-02 Threatist record created from CVE-2026-53407
- 2026-10-03 Alias added: GHSA-xm5c-4gf9-qf8c
References
More Zoom Video Communications, Inc. Workplace vulnerabilities
- TI-2025-40081 Zoom Workplace for Android - Improper Authorization Handling CVSS 3.1CRITICAL 9.8
- TI-2025-38730 Zoom Workplace Clients - Inefficient Regular Expression Complexity CVSS 3.1CRITICAL 9.8
- TI-2024-30470 Zoom Apps - Buffer Overflow CVSS 3.1HIGH 8.8
- TI-2025-20275 Zoom Apps - Heap-based Buffer Overflow CVSS 3.1HIGH 8.8
- TI-2025-20274 Zoom Apps - Buffer Underflow CVSS 3.1HIGH 8.8
- TI-2025-00116 Zoom Apps - Use After Free CVSS 3.1HIGH 8.8
Sources
- CVE-2026-53407 · CVE Program
- CVE-2026-53407 · NVD
- FIRST EPSS
- GHSA-xm5c-4gf9-qf8c · GitHub Advisory Database · CC BY 4.0
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