CVE-2026-55120

HighCVSS 7.8/10Last modified Jul 15, 2026

Description

Heap-based buffer overflow in Microsoft Office PowerPoint allows an unauthorized attacker to execute code locally.

Metrics

CVSS 3.1 7.8/10CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Weakness enumeration

Affected software

No affected versions have been published.

Timeline

Published
Jul 14, 2026
Last modified
Jul 15, 2026
NVD status
Analyzed

Related CVEs from 2026

CVE-2026-551215.5Out-of-bounds read in Microsoft Office allows an unauthorized attacker to disclose information locally.CVE-2026-551227.1Out-of-bounds read in Microsoft Office Excel allows an unauthorized attacker to disclose information locally.CVE-2026-551237.8Heap-based buffer overflow in Microsoft Office PowerPoint allows an unauthorized attacker to execute code locally.CVE-2026-551245.5Improper validation of specified type of input in Microsoft Office Word allows an unauthorized attacker to disclose information locally.CVE-2026-551257.8Heap-based buffer overflow in Microsoft Office allows an unauthorized attacker to execute code locally.CVE-2026-551265.4Improper neutralization of input during web page generation ('cross-site scripting') in Microsoft Office SharePoint allows an authorized attCVE-2026-551277.8Heap-based buffer overflow in Microsoft Office Word allows an unauthorized attacker to execute code locally.CVE-2026-551287.8Use after free in Microsoft Office Word allows an unauthorized attacker to execute code locally.CVE-2026-551297.8Heap-based buffer overflow in Microsoft Office allows an unauthorized attacker to execute code locally.CVE-2026-55137.2The Online Scheduling and Appointment Booking System – Bookly plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'booCVE-2026-551307.8Heap-based buffer overflow in Microsoft Office Word allows an unauthorized attacker to execute code locally.CVE-2026-551317.8Heap-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code locally.