AUGUST 15, 2026
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Case File

CVE-2026-64955

MEDIUM · CVSS 6.1 EPSS 0.22%

Source: NVD + CISA KEV + EPSS · Published 2026-08-12 · Last synced 2026-08-15

CyberRota Analysis

AI-Generated

Microsoft Excel is vulnerable when importing CSV files that contain cells starting with specific characters, which are executed as formulas, potentially leading to arbitrary code execution. Velociraptor fails to sanitize these cells during CSV exports from various interfaces, increasing the risk of exploitation. Organizations using Velociraptor and Excel should prioritize addressing this issue to mitigate potential security risks associated with untrusted CSV files.

CVE
CVE-2026-64955
Severity
MEDIUM
CVSS
6.1
EPSS
0.22%
Microsoft

Original NVD Description

When Microsoft Excel imports a CSV file, it executes cells beginning with certain characters as formulas, giving such CSV files arbitrary execution.  Velociraptor fails to sanitize such cells when exporting to CSV from various places such as the GUI, offline collector or data exports. It is not clear if the vulnerability is actually in Microsoft Excel treating a CSV data file as executable content, or if Velociraptor should be sanitizing the data to prevent Excel from executing it. However, since this is such a common use case for Velociraptor we decided to highlight it in an advisory.