Critical
Security advisory
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.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2019-9535
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 1 Nov 2026, 06:08 UTC · Revision 1
Source evidence
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.
osv:CVE-2019-9535
Complete source record
{
"id": "a60a1cfcaf30664290b85b4c62908038163821691f5cdc44c169134b6e3f7360",
"url": "https://osv.dev/vulnerability/CVE-2019-9535",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "CVE-2019-9535",
"summary": "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.",
"evidence": "osv:CVE-2019-9535",
"products": [],
"severity": "critical",
"structured": {
"id": "CVE-2019-9535",
"aliases": [
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"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"
}
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"affected": [
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"repo": "https://github.com/gnachman/iterm2",
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"modified": "2026-10-24T10:30:35.839649186Z",
"provider": "osv",
"references": [
"https://groups.google.com/forum/#%21topic/iterm2-discuss/57k_AuLdQa4",
"https://kb.cert.org/vuls/id/763073/",
"https://blog.mozilla.org/security/2019/10/09/iterm2-critical-issue-moss-audit/"
],
"provider_metadata": {}
},
"related_cves": [
{
"value": "CVE-2019-9535",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 433835,
"published_at": "2019-10-09T20:15:33.363+00:00"
}