PT-2026-47933 · Microsoft · Office Excel

CVE-2026-44818 · Published 2026-06-09 · Updated 2026-06-19

Positive Technologies (AI Summary)

CVSS v3.1

7.0

High

Base vector

AV:L/AC:H/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 An integer underflow (wrap or wraparound) occurs in Microsoft Office Excel, which allows an unauthorized attacker to execute arbitrary code locally or remotely, affecting the system.

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

DoS

RCE

Race Condition

Weakness Enumeration

CWE-362

Related Identifiers

BDU:2026-08329

CVE-2026-44818

Affected Products

Office Excel

References · 5

• http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-44818 · Security Note
• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-44818 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-44818 · Security Note
• https://bdu.fstec.ru/vul/2026-08329 · Security Note
• https://t.me/cveNotify/171201 · Telegram Post