CVE-2024-43499 — .NET and Visual Studio Denial of Service Vulnerability

Executive Summary

None

Overview

7.5

CVSS HIGH

Important

MS Severity

Not Exploited

MS Exploit Status

Less Likely

MS Exploit Likelihood

Category Denial of Service

Weakness CWE-409: Improper Handling of Highly Compressed Data (Data Amplification)

Released Nov 12 2024

Last Updated Nov 12 2024

Publicly Disclosed No

CISA KEV Not Listed

Known Exploits None Known

EPSS Score 0.02559 — 0.83449 percentile

NVD CVSS 7.5 HIGH — matches MSRC

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C

ATTACK VECTOR

Network

ATTACK COMPLEXITY

Low

PRIVILEGES REQUIRED

None

USER INTERACTION

None

SCOPE

Unchanged

CONFIDENTIALITY

None

INTEGRITY

None

AVAILABILITY

High

EXPLOIT CODE MATURITY

Unproven

REMEDIATION LEVEL

Official Fix

REPORT CONFIDENCE

Confirmed

Temporal Score: 6.5

EPSS Score

0.02559

probability of exploitation in the next 30 days

0.83449 percentile - updated 2026-07-25

View on FIRST.org

Affected Products

10 affected products

Product	KB Article	Severity	Impact	Restart Required
.NET 9.0 installed on Linux	`Release Notes (Security Update)`	Important	Denial of Service	Maybe
.NET 9.0 installed on Mac OS	`Release Notes (Security Update)`	Important	Denial of Service	Maybe
.NET 9.0 installed on Windows	`Release Notes (Security Update)`	Important	Denial of Service	Maybe
Microsoft Visual Studio 2022 version 17.10	`Release Notes (Security Update)`	Important	Denial of Service	Maybe
Microsoft Visual Studio 2022 version 17.11	`Release Notes (Security Update)`	Important	Denial of Service	Maybe
Microsoft Visual Studio 2022 version 17.6	`Release Notes (Security Update)`	Important	Denial of Service	Maybe
Microsoft Visual Studio 2022 version 17.8	`Release Notes (Security Update)`	Important	Denial of Service	Maybe
PowerShell 7.5 installed on Linux	`Releae Notes (Security Update)`	Important	Denial of Service	Maybe
PowerShell 7.5 installed on MacOS	`Releae Notes (Security Update)`	Important	Denial of Service	Maybe
PowerShell 7.5 installed on Windows	`Releae Notes (Security Update)`	Important	Denial of Service	Maybe

Patches

2 patches

Article	Type	Restart
`Release Notes`	Security Update	Maybe
`Releae Notes`	Security Update	Maybe

Known Exploits

No known exploits have been linked for this CVE yet. When available, exploit references will be sourced from public repositories and may be unverified, incomplete, or non-functional. Always review code carefully before use in any environment.

Acknowledgments

None

References

MSRC Advisory MITRE NVD