PT-2026-58212 · Microsoft · Office Excel

Published 2026-07-14 · Updated 2026-07-14 · CVE-2026-50675

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 Microsoft Office Excel (affected versions not specified)

Description A heap-based buffer overflow exists in Microsoft Office Excel, which could allow an unauthorized attacker to execute arbitrary code locally on a system when a user opens a specially crafted file.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Heap Based Buffer Overflow

Weakness Enumeration

CWE-122

Related Identifiers

CVE-2026-50675

Affected Products

Office Excel

References · 3

• https://nvd.nist.gov/vuln/detail/CVE-2026-50675 · Security Note
• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-50675 · Vendor Advisory
• https://twitter.com/windowsforum/status/2077178362301153478 · Twitter Post