PT-2026-33591 · Iterm2 · Iterm2

Published 2026-04-18 · Updated 2026-04-18 · CVE-2026-41253

Positive Technologies (AI Summary)

CVSS v3.1

7.8

High

Base vector

AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Name of the Vulnerable Software and Affected Versions iTerm2 versions prior to 3.7.0

Description Displaying a .txt file can lead to code execution through the use of DCS 2000p and OSC 135 data. This occurs when the working directory contains a malicious file with a name that serves as valid output from the conductor encoding path, such as a pathname starting with the substring ace/c+. The issue stems from the software accepting the SSH conductor protocol from terminal output that does not originate from a legitimate conductor session.

Recommendations Update to a version newer than 3.6.9.

Exploit

Fix

Weakness Enumeration

CWE-829

Related Identifiers

CVE-2026-41253

Affected Products

Iterm2

References · 7

• 🔥 https://blog.calif.io/p/mad-bugs-even-cat-readmetxt-is-not · Exploit
• https://github.com/gnachman/iTerm2/commit/a9e745993c2e2cbb30b884a16617cd5495899f86 · Patch
• https://nvd.nist.gov/vuln/detail/CVE-2026-41253 · Security Note
• https://twitter.com/CVEnew/status/2045467320802247031 · Twitter Post
• https://news.ycombinator.com/item?id=47809190 · Note
• https://twitter.com/SecureChap/status/2045534068851294644 · Twitter Post
• https://iterm2.com/downloads.html · Note