How severe is CVE-2021-40482?

CVE-2021-40482 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with high attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2021-40482 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (80th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-40482?

CVE-2021-40482 affects Microsoft Sharepoint Server. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-40482?

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

When was CVE-2021-40482 published?

CVE-2021-40482 was published on 2021-10-13 and last updated on 2026-06-17.

CVE-2021-40482

CVE-2021-40482 is a medium-severity vulnerability in Microsoft Sharepoint Server with a CVSS 3.x base score of 5.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: Medium (CVSS 3.x base score 5.3)
CVSS v2: 5.0
EPSS exploit prediction: 2% (80th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Microsoft Sharepoint Server
Published: 2021-10-13
Last modified: 2026-06-17

Description

Microsoft SharePoint Server Information Disclosure Vulnerability

Frequently asked questions

What is CVE-2021-40482?: Microsoft SharePoint Server Information Disclosure Vulnerability
How severe is CVE-2021-40482?: CVE-2021-40482 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with high attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2021-40482 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (80th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-40482?: CVE-2021-40482 affects Microsoft Sharepoint Server. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-40482?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-40482 published?: CVE-2021-40482 was published on 2021-10-13 and last updated on 2026-06-17.

References

https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-40482

Affected products (1)

cpe:2.3:a:microsoft:sharepoint_server:2019:*:*:*:*:*:*:*

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