Heap-based Buffer Overflow Affecting microsoft.diasymreader.native package, versions [0,]


Severity

Recommended
0.0
high
0
10

CVSS assessment by Snyk's Security Team. Learn more

Threat Intelligence

EPSS
0.95% (62nd percentile)

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  • Snyk IDSNYK-DOTNET-MICROSOFTDIASYMREADERNATIVE-22412149
  • published11 Nov 2026
  • disclosed9 Nov 2026
  • creditQuac Tran

Introduced: 9 Nov 2026

NewCVE-2026-118745  (opens in a new tab)
CWE-122  (opens in a new tab)

How to fix?

A fix was pushed into the master branch but not yet published.

Overview

Microsoft.DiaSymReader.Native is a Native implementation of PDB file reader and writer.

Affected versions of this package are vulnerable to Heap-based Buffer Overflow when its native reader processes a native PDB whose line metadata exceeds the caller-provided buffer, causing an out-of-bounds write. An attacker can achieve code execution by getting a victim to read an attacker-supplied native PDB through this reader. Exposure is limited to Windows.

CVSS Base Scores

version 4.0
version 3.1