How severe is CVE-2024-26221?

CVE-2024-26221 has a CVSS 3.x base score of 7.2, rated high severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2024-26221 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (76th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2024-26221?

CVE-2024-26221 primarily affects Microsoft Windows Server 2016. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2024-26221?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2024-26221 have an EU (EUVD) identifier?

Yes. CVE-2024-26221 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-23497.

When was CVE-2024-26221 published?

CVE-2024-26221 was published on 2024-04-09 and last updated on 2026-06-17.

CVE-2024-26221

CVE-2024-26221 is a high-severity vulnerability in Microsoft Windows Server 2016 with a CVSS 3.x base score of 7.2. 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-203.

Key facts

Severity: High (CVSS 3.x base score 7.2)
EPSS exploit prediction: 2% (76th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2024-23497
Weakness: CWE-203
Affected product: Microsoft Windows Server 2016
Published: 2024-04-09
Last modified: 2026-06-17

Description

Windows DNS Server Remote Code Execution Vulnerability

Frequently asked questions

What is CVE-2024-26221?: Windows DNS Server Remote Code Execution Vulnerability
How severe is CVE-2024-26221?: CVE-2024-26221 has a CVSS 3.x base score of 7.2, rated high severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2024-26221 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (76th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2024-26221?: CVE-2024-26221 primarily affects Microsoft Windows Server 2016. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2024-26221?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2024-26221 have an EU (EUVD) identifier?: Yes. CVE-2024-26221 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-23497.
When was CVE-2024-26221 published?: CVE-2024-26221 was published on 2024-04-09 and last updated on 2026-06-17.

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2024-26221

Affected products (4)

cpe:2.3:o:microsoft:windows_server_2016:*:*:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_server_2019:*:*:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_server_2022:*:*:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_server_2022_23h2:*:*:*:*:*:*:*:*

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