Zoom Clients - Buffer Over-read
Priority LOW 29CWE-126Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- Required
- Attack complexity
- Low
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-126 and the CVSS impact.
Summary
Missing bounds check in the annotator function of Zoom Clients allows buffer over-read, which may allow a meeting participant to conduct a denial of service on another participant via network access.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00355 29th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
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 Clients | see references | — | No fix listed | CNA |
- Zoom Clients VendorZoom Video Communications, Inc. Affected see references Fixed in — No fix listed CNA
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2026-53414
- 2026-10-03 Alias added: GHSA-q9vw-2jgv-5p57
References
More Zoom Video Communications, Inc. vulnerabilities
- TI-2026-18340 Zoom Node Deployments - Command Injection CVSS 3.1CRITICAL 9.9
- TI-2017-11048 The ZoomLauncher binary in the Zoom client for Linux before 2.0.115900.1201 does not… CVSS 3.1HIGH 8.8
- TI-2017-11047 Stack-based buffer overflow in the ZoomLauncher binary in the Zoom client for Linux… CVSS 3.1HIGH 8.8
- TI-2020-04976 Path traversal in Zoom CVSS 3.1CRITICAL 9.8
- TI-2026-38498 Zoom Workplace VDI Plugin for Windows - Improper Input Validation CVSS 3.1CRITICAL 9.8
- TI-2021-13217 Improper certificate validation in Zoom Client for Meetings for Windows CVSS 3.1CRITICAL 9.8
Sources
- CVE-2026-53414 · CVE Program
- CVE-2026-53414 · NVD
- FIRST EPSS
- GHSA-q9vw-2jgv-5p57 · GitHub Advisory Database · CC BY 4.0
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