CVE-2023-24897

Code execution via corrupted PDB heap overflow

Published Jun 14, 2023 · Updated Jan 1, 2025

Heap-based buffer overflow in the MSDIA SDK used by Microsoft .NET and Visual Studio allows local users to execute code via a malicious PDB file. The debugging-symbol reader mishandles corrupted PDB data and overruns a heap allocation while parsing the file. Exploitation requires user interaction with the crafted file; resulting memory corruption can crash the process or run attacker-controlled code.

CVSS severity7.8
High
EPSS probability1.18%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Heap-based buffer overflow in the MSDIA SDK used by Microsoft .NET and Visual Studio allows local users to execute code via a malicious PDB file. The debugging-symbol reader mishandles corrupted PDB data and overruns a heap allocation while parsing the file. Exploitation requires user interaction with the crafted file; resulting memory corruption can crash the process or run attacker-controlled code.

The record

CVE
CVE-2023-24897
Published
Jun 14, 2023
Updated
Jan 1, 2025
Vendor
Microsoft
Product
Microsoft Visual Studio 2019
Classifications
CWE-122, T1204.002, T1203
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jun 14, 2023CVE publishedPublication date reported by the CVE source.
  2. Jan 1, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=16.11.0 <16.11.27

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

Microsoft · Microsoft Visual Studio 2019version=16.11.0 <16.11.27
Microsoft · Microsoft .NET Framework 3.5 and 4.8.1version=4.8.1 <4.8.9166.0
Microsoft · .NET 6.0version=6.0.0 <6.0.18
Microsoft · Microsoft .NET Framework 3.5 and 4.6.2version=4.7.0 <10.0.10240.19983
Microsoft · Microsoft .NET Framework 3.5 and 4.8version=4.8.0 <4.8.4644.0
Microsoft · Microsoft Visual Studio 2015version=14.0.0 <14.0.27555.0
Microsoft · Microsoft Visual Studio 2013version=12.0.0 <12.0.40700.0
Microsoft · Microsoft Visual Studio 2022 version 17.6version=17.6.0 <17.6.3
Microsoft · Microsoft Visual Studio 2022 version 17.4version=17.4.0 <17.4.8
Microsoft · Microsoft Visual Studio 2022 version 17.0version=17.0.0 <17.0.22
Microsoft · Microsoft Visual Studio 2022 version 17.2version=17.2.0 <17.2.16
Microsoft · Microsoft Visual Studio 2017version=15.9.0 <15.9.55
Microsoft · .NET 7.0version=7.0.0 <7.0.7
Microsoft · Microsoft .NET Framework 3.5 and 4.7.2version=4.7.0 <4.7.4050.0
Microsoft · Microsoft .NET Frameworkversion=3.0.0.0 <10.0.14393.5989; version=4.7.0 <4.7.04043.0
Microsoft · PowerShell 7.2version=7.2.0 <7.2.12
Microsoft · Microsoft .NET Framework 4.6.2version=4.7.0 <4.7.04043.0
Microsoft · Microsoft .NET Framework 4.8version=4.8.0 <4.8.4644.0

Published CVSS scores

7.8Microsoft CorporationCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-122Heap-based Buffer Overflow
T1204.002Malicious File
T1203Exploitation for Client Execution

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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