AUGUST 29, 2026
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Case File

CVE-2026-8357

HIGH · CVSS 7.8 EPSS 0.16%

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2026-06-15 · Last synced 2026-08-04

CyberRota Analysis

This is a high severity vulnerability with a CVSS score of 7.8. It affects Office.

CVE
CVE-2026-8357
Severity
HIGH
CVSS
7.8
EPSS
0.16%
Office

Original NVD Description

LibreOffice Calc compiles cell formulas when opening a spreadsheet. A heap buffer overflow existed when compiling a very long formula made up of many opening tokens. The array that tracks nesting depth was allocated one element too small for that worst case, so such a formula wrote one element past its end. In fixed versions the array is sized to hold the largest possible nesting.