Integer Underflow in Microsoft Standard XPS Elevates Privileges

Publication date: 2026-09-08

Last updated on: 2026-09-24

Assigner: Microsoft Corporation

Description

Integer underflow (wrap or wraparound) in Microsoft Standard XPS allows an authorized attacker to elevate privileges locally.

CVSS Scores

EPSS Scores

Probability:
Percentile:

Meta Information

Published

2026-09-08

Last Modified

2026-09-24

Generated

2026-09-29

AI Q&A

2026-09-09

EPSS Evaluated

2026-09-27

NVD

CVE-2026-69269

Affected Vendors & Products

Vendor	Product	Version / Range
microsoft	standard_xps	*

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-191	The product subtracts one value from another, such that the result is less than the minimum allowable integer value, which produces a value that is not equal to the correct result.

Attack-Flow Graph

Executive Summary

This vulnerability is an integer underflow issue in Microsoft Standard XPS that allows an authorized attacker to elevate privileges locally. Integer underflow occurs when a calculation results in a value smaller than the minimum representable integer, causing it to wrap around to a large positive number, which can lead to unexpected behavior or privilege escalation.

Impact Analysis

An attacker with local access could exploit this to gain higher privileges on your system, potentially allowing them to install programs, view or delete data, or create new accounts with full user rights. The high CVSS score indicates significant risk of compromise.

Mitigation Strategies

Apply the latest security updates from Microsoft for Standard XPS to patch the integer underflow vulnerability. Ensure all systems are updated promptly to prevent potential privilege escalation attacks.

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