How severe is CVE-2024-21319?

CVE-2024-21319 has a CVSS 3.x base score of 6.8, rated medium severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2024-21319 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (86th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2024-21319?

CVE-2024-21319 primarily affects Microsoft .net. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2024-21319?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2024-21319 have an EU (EUVD) identifier?

Yes. CVE-2024-21319 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-0259.

When was CVE-2024-21319 published?

CVE-2024-21319 was published on 2024-01-09 and last updated on 2026-06-17.

CVE-2024-21319

CVE-2024-21319 is a medium-severity vulnerability in Microsoft .net with a CVSS 3.x base score of 6.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-20.

Key facts

Severity: Medium (CVSS 3.x base score 6.8)
EPSS exploit prediction: 3% (86th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2024-0259
Weakness: CWE-20
Affected product: Microsoft .net
Published: 2024-01-09
Last modified: 2026-06-17

Description

Microsoft Identity Denial of service vulnerability

Frequently asked questions

What is CVE-2024-21319?: Microsoft Identity Denial of service vulnerability
How severe is CVE-2024-21319?: CVE-2024-21319 has a CVSS 3.x base score of 6.8, rated medium severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2024-21319 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (86th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2024-21319?: CVE-2024-21319 primarily affects Microsoft .net. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2024-21319?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2024-21319 have an EU (EUVD) identifier?: Yes. CVE-2024-21319 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-0259.
When was CVE-2024-21319 published?: CVE-2024-21319 was published on 2024-01-09 and last updated on 2026-06-17.

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2024-21319

Affected products (3)

cpe:2.3:a:microsoft:.net:*:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:identity_model:*:*:*:*:*:.net:*:*
cpe:2.3:a:microsoft:visual_studio_2022:*:*:*:*:*:*:*:*

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