CVE-2026-71339

Published: Sep 8, 2026Modified: Sep 8, 2026

6.7

Vector

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

Exploitability: 0.8 / Impact: 5.9

Source: secure@microsoft.com

Description

Heap-based buffer overflow in Windows Installer allows an authorized attacker to elevate privileges locally.

Related CWEs

Heap-based Buffer Overflow

A heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the buffer was allocated using a routine such as malloc().

References (1)

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-71339

Source: secure@microsoft.com

Timeline

No history available yet.