iTerm2, up to and including version 3.3.5, with tmux integration is vulnerable to remote command execution
Published Oct 9, 2019
9.8
CRITICALCVSS 3.1
EPSS 2.46%
Description
A vulnerability exists in the way that iTerm2 integrates with tmux's control mode, which may allow an attacker to execute arbitrary commands by providing malicious output to the terminal. This affects versions of iTerm2 up to and including 3.3.5. This vulnerability may allow an attacker to execute arbitrary commands on their victim's computer by providing malicious output to the terminal. It could be exploited using command-line utilities that print attacker-controlled content.
Affected products
-
- Version 3.3.5StatusaffectedConstraints<=3.3.5
- Version
No data.
No Red Hat product state for this CVE.
No package ranges for this CVE.
Remediation
Vendor solution
Update iTerm2 to version 3.3.6, which includes mitigations against exploitation of this vulnerability.
Metrics
No CVSS v4.0 score for this CVE.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
No CVSS v3.0 score for this CVE.
AV:N/AC:L/Au:N/C:C/I:C/A:C
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 2, 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 (18 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 2, 2026 | 2.46% (0.02459) | 83.88th | v5 (v2026.06.15) |
| Jun 15, 2026 | 2.48% (0.02480) | 82.44th | v5 (v2026.06.15) |
| May 4, 2026 | 4.31% (0.04312) | 88.94th | v4 (v2025.03.14) |
| Dec 15, 2025 | 1.69% (0.01688) | 81.71th | v4 (v2025.03.14) |
| Apr 16, 2025 | 0.42% (0.00417) | 60.58th | v4 (v2025.03.14) |
| Mar 30, 2025 | 1.78% (0.01778) | 81.05th | v4 (v2025.03.14) |
| Mar 29, 2025 | 4.03% (0.04029) | 80.49th | v4 (v2025.03.14) |
| Jul 20, 2024 | 0.53% (0.00532) | 77.34th | v3 (v2023.03.01) |
| Feb 8, 2024 | 0.53% (0.00532) | 76.41th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.53% (0.00532) | 73.55th | v3 (v2023.03.01) |
| Mar 6, 2023 | 0.95% (0.00954) | 36.37th | v2 (v2022.01.01) |
| Sep 2, 2022 | 0.95% (0.00954) | 34.50th | v2 (v2022.01.01) |
| Apr 1, 2022 | 0.95% (0.00954) | 32.50th | v2 (v2022.01.01) |
| Feb 4, 2022 | 12.49% (0.12492) | 89.83th | v2 (v2022.01.01) |
| Feb 3, 2022 | 6.22% (0.06225) | 82.33th | v1 |
| Jan 6, 2022 | 6.22% (0.06225) | 82.16th | v1 |
| Sep 1, 2021 | 1.46% (0.01458) | 72.29th | v1 |
| Apr 14, 2021 | 1.46% (0.01458) | 0.00th | v1 |
References (3)
- https://blog.mozilla.org/security/2019/10/09/iterm2-critical-issue-moss-audit/ x_refsource_MISCExploitThird Party Advisory
- https://groups.google.com/forum/#%21topic/iterm2-discuss/57k_AuLdQa4 x_refsource_CONFIRM
- https://kb.cert.org/vuls/id/763073/ third-party-advisoryx_refsource_CERT-VNThird Party AdvisoryUS Government Resource
| Link | Providers | Tags |
|---|---|---|
| https://blog.mozilla.org/security/2019/10/09/iterm2-critical-issue-moss-audit/ | x_refsource_MISCExploitThird Party Advisory | |
| https://groups.google.com/forum/#%21topic/iterm2-discuss/57k_AuLdQa4 | x_refsource_CONFIRM | |
| https://kb.cert.org/vuls/id/763073/ | third-party-advisoryx_refsource_CERT-VNThird Party AdvisoryUS Government Resource |
Change history (0)
No recorded changes yet.