CVE-2026-62897
Analyzed Analyzed - Analysis Complete

Integer Overflow in .NET Framework Leads to Code Execution

Vulnerability report for CVE-2026-62897, including description, CVSS score, EPSS score, affected products, exploitability, helpful resources, and attack-flow context.

Publication date: 2026-08-11

Last updated on: 2026-08-14

Assigner: Microsoft Corporation

Description

Integer overflow or wraparound in .NET Framework allows an unauthorized attacker to execute code locally.

CVSS Scores

EPSS Scores

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Meta Information

Published
2026-08-11
Last Modified
2026-08-14
Generated
2026-09-01
AI Q&A
2026-08-12
EPSS Evaluated
2026-08-30
NVD
EUVD

Affected Vendors & Products

Showing 9 associated CPEs
Vendor Product Version / Range
microsoft .net_framework 3.5
microsoft .net_framework 4.7.2
microsoft visual_studio_2022 From 17.14.0 (inc) to 17.14.38 (exc)
microsoft visual_studio_2026 From 18.8.0 (inc) to 18.8.3 (exc)
microsoft .net From 10.0.0 (inc) to 10.0.11 (exc)
microsoft .net From 8.0.0 (inc) to 8.0.30 (exc)
microsoft .net From 9.0.0 (inc) to 9.0.19 (exc)
microsoft .net_framework 4.8.1
microsoft .net_framework 4.8

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
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

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Executive Summary

This vulnerability is an integer overflow or wraparound flaw in the .NET Framework. It allows an unauthorized attacker to execute arbitrary code on a local system by exploiting how the framework handles integer calculations.

Impact Analysis

An attacker could exploit this to run malicious code on your system, potentially leading to data theft, system damage, or unauthorized access. It requires local access but could escalate privileges if combined with other vulnerabilities.

Compliance Impact

This vulnerability could lead to unauthorized code execution, potentially causing data breaches. This may violate GDPR (data protection) or HIPAA (health data security) if sensitive data is exposed, requiring breach notifications and remediation.

Mitigation Strategies

Apply the latest security updates from Microsoft for .NET Framework to patch the integer overflow vulnerability. Monitor Microsoft's security advisories for patches and install them promptly.

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