Zoom clients on Windows (before version 4.1.34814.1119), Mac OS (before version 4.1.34801.1116), and Linux (2.4.129780.0915 and below) are vulnerable to unauthorized message processing
Published Nov 30, 2018
9.8
CRITICALCVSS 3.0
EPSS 3.49%
Description
Zoom clients on Windows (before version 4.1.34814.1119), Mac OS (before version 4.1.34801.1116), and Linux (2.4.129780.0915 and below) are vulnerable to unauthorized message processing. A remote unauthenticated attacker can spoof UDP messages from a meeting attendee or Zoom server in order to invoke functionality in the target client. This allows the attacker to remove attendees from meetings, spoof messages from users, or hijack shared screens.
Affected products
-
- Version Zoom on Windows before version 4.1.34814.1119, Zoom on Mac OS before version 4.1.34801.1116, Zoom on Linux version 2.4.129780.0915 and below.StatusaffectedConstraints-
- Version
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
No data.
No Red Hat product state for this CVE.
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
AV:N/AC:L/Au:N/C:P/I:P/A:P
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
Score over time
2021–2026- EPSS v1
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v1
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (21 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 3.49% (0.03487) | 88.74th | v5 (v2026.06.15) |
| Jun 15, 2026 | 3.49% (0.03487) | 87.57th | v5 (v2026.06.15) |
| Jun 11, 2026 | 1.03% (0.01025) | 77.69th | v4 (v2025.03.14) |
| Jun 8, 2026 | 3.61% (0.03609) | 88.02th | v4 (v2025.03.14) |
| Dec 16, 2025 | 1.40% (0.01400) | 79.93th | v4 (v2025.03.14) |
| Nov 30, 2025 | 3.67% (0.03670) | 87.46th | v4 (v2025.03.14) |
| Mar 30, 2025 | 1.79% (0.01785) | 81.08th | v4 (v2025.03.14) |
| Mar 29, 2025 | 4.35% (0.04345) | 81.20th | v4 (v2025.03.14) |
| Mar 17, 2025 | 1.79% (0.01785) | 81.49th | v4 (v2025.03.14) |
| Jul 20, 2024 | 0.86% (0.00863) | 82.50th | v3 (v2023.03.01) |
| Feb 21, 2024 | 0.86% (0.00863) | 81.81th | v3 (v2023.03.01) |
| Mar 11, 2023 | 0.86% (0.00863) | 79.81th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.97% (0.00966) | 80.98th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.05% (0.01055) | 52.13th | v2 (v2022.01.01) |
| Sep 17, 2022 | 1.05% (0.01055) | 50.47th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.05% (0.01055) | 48.43th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.05% (0.01055) | 27.52th | v2 (v2022.01.01) |
| Feb 3, 2022 | 0.52% (0.00523) | 12.55th | v1 |
| Jan 6, 2022 | 0.52% (0.00523) | 12.10th | v1 |
| Sep 1, 2021 | 0.52% (0.00523) | 32.27th | v1 |
| Apr 14, 2021 | 0.52% (0.00523) | 0.00th | v1 |
References (1)
- https://www.tenable.com/security/research/tra-2018-40 x_refsource_MISCExploitThird Party Advisory
| Link | Providers | Tags |
|---|---|---|
| https://www.tenable.com/security/research/tra-2018-40 | x_refsource_MISCExploitThird Party Advisory |
Change history (0)
No recorded changes yet.