CVE-2026-78521

HighCVSS 8.8/10Last modified Sep 17, 2026

Description

Heap-based buffer overflow in Microsoft Office Word allows an unauthorized attacker to execute code over a network.

Metrics

CVSS 3.1 8.8/10CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Weakness enumeration

CWE-122

Affected software

No affected versions have been published.

Timeline

Published
Sep 8, 2026
Last modified
Sep 17, 2026
NVD status
Analyzed

Related CVEs from 2026

CVE-2026-785226.5Out-of-bounds read in Microsoft Office Word allows an unauthorized attacker to disclose information over a network.CVE-2026-785237.5Use after free in Windows DNS allows an unauthorized attacker to deny service over a network.CVE-2026-785248.8Out-of-bounds write in Microsoft Office allows an unauthorized attacker to execute code over a network.CVE-2026-785258.8Use after free in Microsoft Office Outlook allows an unauthorized attacker to execute code over a network.CVE-2026-785268.8Heap-based buffer overflow in Microsoft Office Word allows an unauthorized attacker to execute code over a network.CVE-2026-785285.3Unauthenticated Broken Access Control in BerqWP <= 4.1.15 versions.CVE-2026-785299.8Unauthenticated PHP Object Injection in Alliance <= 3.11 versions.CVE-2026-78539.8A weakness has been identified in D-Link DI-8100 16.07.26A1. Affected is the function sprintf of the file /auto_reboot.asp of the component CVE-2026-785307.7Subscriber Arbitrary File Deletion in FoodBakery <= 4.6 versions.CVE-2026-785319.8Unauthenticated PHP Object Injection in Jacqueline <= 2.22 versions.CVE-2026-785327.1Unauthenticated Cross Site Scripting (XSS) in LMS <= 8.3 versions.CVE-2026-785339.8Unauthenticated PHP Object Injection in Qwery <= 3.6.1 versions.
CVE-2026-78521: High severity, CVSS 8.8 | Vulnix