CVE-2026-41253
6.9
CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:L
Summary
In iTerm2 through 3.6.9, displaying a .txt file can cause code execution via DCS 2000p and OSC 135 data, if the working directory contains a malicious file whose name is valid output from the conductor encoding path, such as a pathname with an initial ace/c+ substring, aka "hypothetical in-band signaling abuse." This occurs because iTerm2 accepts the SSH conductor protocol from terminal output that does not originate from a legitimate conductor session.
Affected Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| iTerm2 | iTerm2 | 0 <= 3.6.9 | affected |
Weaknesses
- CWE-829: CWE-829 Inclusion of Functionality from Untrusted Control Sphere
ADP Enrichment
CISA ADP Vulnrichment
- SSVC:
- Exploitation: poc
- Automatable: no
- Technical Impact: total
References
- https://iterm2.com/downloads.html
- https://blog.calif.io/p/mad-bugs-even-cat-readmetxt-is-not
- https://github.com/gnachman/iTerm2/commit/a9e745993c2e2cbb30b884a16617cd5495899f86
- https://news.ycombinator.com/item?id=47809190
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