How severe is CVE-2024-49147?

CVE-2024-49147 has a CVSS 3.x base score of 9.3, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity low, and availability none.

Is CVE-2024-49147 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (67th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2024-49147?

CVE-2024-49147 affects Microsoft Update Catalog. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2024-49147?

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

Does CVE-2024-49147 have an EU (EUVD) identifier?

Yes. CVE-2024-49147 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-43766.

When was CVE-2024-49147 published?

CVE-2024-49147 was published on 2024-12-12 and last updated on 2026-06-17.

CVE-2024-49147

CVE-2024-49147 is a critical-severity vulnerability in Microsoft Update Catalog with a CVSS 3.x base score of 9.3. 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-502.

Key facts

Severity: Critical (CVSS 3.x base score 9.3)
EPSS exploit prediction: 1% (67th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2024-43766
Weakness: CWE-502
Affected product: Microsoft Update Catalog
Published: 2024-12-12
Last modified: 2026-06-17

Description

Deserialization of untrusted data in Microsoft Update Catalog allows an unauthorized attacker to elevate privileges on the website’s webserver.

Frequently asked questions

What is CVE-2024-49147?: Deserialization of untrusted data in Microsoft Update Catalog allows an unauthorized attacker to elevate privileges on the website’s webserver.
How severe is CVE-2024-49147?: CVE-2024-49147 has a CVSS 3.x base score of 9.3, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity low, and availability none.
Is CVE-2024-49147 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (67th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2024-49147?: CVE-2024-49147 affects Microsoft Update Catalog. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2024-49147?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
Does CVE-2024-49147 have an EU (EUVD) identifier?: Yes. CVE-2024-49147 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-43766.
When was CVE-2024-49147 published?: CVE-2024-49147 was published on 2024-12-12 and last updated on 2026-06-17.

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2024-49147

Affected products (1)

cpe:2.3:a:microsoft:update_catalog:-:*:*:*:*:*:*:*

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