Is CVE-2024-21409 in the CISA KEV catalog?

No. CVE-2024-21409 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2024-21409?

CVE-2024-21409 has a CVSS v3 base score of 7.3 (HIGH).

What is the EPSS score for CVE-2024-21409?

CVE-2024-21409 has an EPSS score of 2.51% (83th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2024-21409?

Upgrade Microsoft .NET SDK 6.0 to 7.0.18 or later. Fixes are available for 5 affected products.

CVE & CISA-KEV Catalog

CVE-2024-21409

HIGHEPSS 83th pctl

7.3

CVSS v3

NVD

Description

.NET, .NET Framework, and Visual Studio Remote Code Execution Vulnerability

CWE-416Use After Free

How to fix

Remediation Available

Microsoft .NET SDK 6.0Windows application

Affected:7.0.0 7.0.18Fixed in:7.0.18Microsoft Corporation

Affected:6.0.0 6.0.29Fixed in:6.0.29Microsoft Corporation

Affected:8.0.0 8.0.4Fixed in:8.0.4Microsoft Corporation

Microsoft .NET SDK 7.0Windows application

Affected:8.0.0 8.0.4Fixed in:8.0.4Microsoft Corporation

Affected:6.0.0 6.0.29Fixed in:6.0.29Microsoft Corporation

Affected:7.0.0 7.0.18Fixed in:7.0.18Microsoft Corporation

Microsoft .NET SDK 8.0Windows application

Affected:6.0.0 6.0.29Fixed in:6.0.29Microsoft Corporation

Affected:8.0.0 8.0.4Fixed in:8.0.4Microsoft Corporation

Affected:7.0.0 7.0.18Fixed in:7.0.18Microsoft Corporation

Microsoft .NET SDK 9.0Windows application

Affected:8.0.0 8.0.4Fixed in:8.0.4Microsoft Corporation

Affected:6.0.0 6.0.29Fixed in:6.0.29Microsoft Corporation

Affected:7.0.0 7.0.18Fixed in:7.0.18Microsoft Corporation

PowerShellWindows application

Affected:7.4 7.4.2Fixed in:7.4.2Microsoft Corporation

Affected:7.3 7.3.12Fixed in:7.3.12Microsoft Corporation

Affected:7.2 7.2.19Fixed in:7.2.19Microsoft Corporation

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorLocal

Attack ComplexityLow

Privileges RequiredLow

User InteractionRequired

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H

Exploit Intelligence

2.51%probability of exploitation in 30 days

83rdpercentile

Elevated risk: more likely to be exploited than 83% of all known CVEs.

References

Vendor Advisory1

msrc.microsoft.com

Other references1

security.netapp.com

Related Vulnerabilities

Other CWE-416 (Use After Free) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2019-0708	Critical	9.8	100%	KEV + Ransom	-
CVE-2021-31166	Critical	9.8	100%	KEV	Fix
CVE-2015-5119	Critical	9.8	99%	KEV	-
CVE-2010-3962	High	8.1	97%	KEV	-
CVE-2015-0313	Critical	9.8	96%	KEV	Fix
CVE-2017-9798	High	7.5	95%	-	Fix

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2025-01-17.