How severe is CVE-2024-43455?

CVE-2024-43455 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2024-43455 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (74th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2024-43455?

CVE-2024-43455 primarily affects Microsoft Windows Server 2008. In total, 9 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2024-43455?

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-2024-43455 have an EU (EUVD) identifier?

Yes. CVE-2024-43455 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-40724.

When was CVE-2024-43455 published?

CVE-2024-43455 was published on 2024-09-10 and last updated on 2026-06-17.

CVE-2024-43455

CVE-2024-43455 is a high-severity vulnerability in Microsoft Windows Server 2008 with a CVSS 3.x base score of 8.8. 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: High (CVSS 3.x base score 8.8)
EPSS exploit prediction: 2% (74th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2024-40724
Weakness: CWE-20
Affected product: Microsoft Windows Server 2008
Published: 2024-09-10
Last modified: 2026-06-17

Description

Windows Remote Desktop Licensing Service Spoofing Vulnerability

Frequently asked questions

What is CVE-2024-43455?: Windows Remote Desktop Licensing Service Spoofing Vulnerability
How severe is CVE-2024-43455?: CVE-2024-43455 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2024-43455 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (74th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2024-43455?: CVE-2024-43455 primarily affects Microsoft Windows Server 2008. In total, 9 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2024-43455?: 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-2024-43455 have an EU (EUVD) identifier?: Yes. CVE-2024-43455 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-40724.
When was CVE-2024-43455 published?: CVE-2024-43455 was published on 2024-09-10 and last updated on 2026-06-17.

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2024-43455

Affected products (9)

cpe:2.3:o:microsoft:windows_server_2008:-:sp2:*:*:*:*:x64:*
cpe:2.3:o:microsoft:windows_server_2008:-:sp2:*:*:*:*:x86:*
cpe:2.3:o:microsoft:windows_server_2008:r2:sp1:*:*:*:*:x64:*
cpe:2.3:o:microsoft:windows_server_2012:-:*:*:*:*:*:x64:*
cpe:2.3:o:microsoft:windows_server_2012:r2:*:*:*:*:*:x64:*
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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