AUGUST 4, 2026
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Case File

CVE-2026-21258

MEDIUM · CVSS 5.5 EPSS 0.60%

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2026-02-10 · Last synced 2026-08-04

CyberRota Analysis

This is a medium severity vulnerability with a CVSS score of 5.5. It affects Microsoft, Office.

CVE
CVE-2026-21258
Severity
MEDIUM
CVSS
5.5
EPSS
0.60%
Microsoft Office

Original NVD Description

Improper input validation in Microsoft Office Excel allows an unauthorized attacker to disclose information locally.

Related CVEs

Other vulnerabilities affecting the same vendor(s)

CVE-2026-17992 MEDIUM CVE-2026-17932 MEDIUM CVE-2026-17908 MEDIUM CVE-2026-17900 MEDIUM CVE-2026-17863 HIGH CVE-2026-17862 HIGH