Is CVE-2026-41253 actively exploited?

No active exploitation of CVE-2026-41253 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-41253 be exploited remotely?

No. CVE-2026-41253 requires local access to exploit.

What is the CVSS score of CVE-2026-41253?

CVE-2026-41253 has a CVSS score of 6.9 (MEDIUM).

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MEDIUM

CVE-2026-41253

CWE-829Published: April 18, 2026· Updated: Apr 20, 2026

6.9

CVSS v3.1

EPSS:0.01%probability of exploitation in 30 daysPercentile:0.3th

Official Description

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.

NVD Source

Technical Analysis

CVE-2026-41253 requires local access, meaning attackers must already have a foothold on the target system.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), with a CVSS base score of 6.9.