PT-2026-58523 · Microsoft · Office

CVE-2026-55018

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Published

2026-07-14

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Updated

2026-07-18

CVSS v3.1

7.8

High

VectorAV: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 (affected versions not specified)
Description A use after free condition exists in Microsoft Office, which allows an unauthorized attacker to execute arbitrary code locally or remotely, potentially affecting the entire system. Use after free is a memory corruption issue that occurs when an application continues to use a pointer after it has been freed.
Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

DoS

RCE

Use After Free

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Weakness Enumeration

Related Identifiers

BDU:2026-09793
CVE-2026-55018

Affected Products

Office