Heap-based Buffer Overflow in Microsoft Standard XPS

Publication date: 2026-09-08

Last updated on: 2026-09-24

Assigner: Microsoft Corporation

Description

Heap-based buffer overflow in Microsoft Standard XPS allows an authorized attacker to elevate privileges over a network.

CVSS Scores

EPSS Scores

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Meta Information

Published

2026-09-08

Last Modified

2026-09-24

Generated

2026-09-29

AI Q&A

2026-09-10

EPSS Evaluated

2026-09-27

NVD

CVE-2026-68889

Affected Vendors & Products

Vendor	Product	Version / Range
microsoft	standard_xps	*

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-122	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().
CWE-190	The product performs a calculation that can produce an integer overflow or wraparound when the logic assumes that the resulting value will always be larger than the original value. This occurs when an integer value is incremented to a value that is too large to store in the associated representation. When this occurs, the value may become a very small or negative number.

Attack-Flow Graph

Executive Summary

This is a heap-based buffer overflow in Microsoft Standard XPS. An authorized attacker can exploit it over a network to elevate their privileges.

Impact Analysis

An attacker could gain higher privileges on your system, potentially allowing them to take control of affected applications or data.

Mitigation Strategies

Apply the latest security updates from Microsoft for Standard XPS to patch the heap-based buffer overflow vulnerability. Disable unnecessary network services related to XPS if not required. Monitor network traffic for unusual privilege escalation attempts.

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