How severe is CVE-2017-8745?

CVE-2017-8745 has a CVSS 3.x base score of 5.4, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2017-8745 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (75th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2017-8745?

CVE-2017-8745 affects Microsoft Sharepoint Foundation. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2017-8745?

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

When was CVE-2017-8745 published?

CVE-2017-8745 was published on 2017-09-13 and last updated on 2026-06-17.

CVE-2017-8745

CVE-2017-8745 is a medium-severity vulnerability in Microsoft Sharepoint Foundation with a CVSS 3.x base score of 5.4. 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-79.

Key facts

Severity: Medium (CVSS 3.x base score 5.4)
CVSS v2: 3.5
EPSS exploit prediction: 2% (75th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Microsoft Sharepoint Foundation
Published: 2017-09-13
Last modified: 2026-06-17

Description

An elevation of privilege vulnerability exists in Microsoft SharePoint Foundation 2013 Service Pack 1 when it does not properly sanitize a specially crafted web request to an affected SharePoint server, aka "Microsoft SharePoint Cross Site Scripting Vulnerability".

Frequently asked questions

What is CVE-2017-8745?: An elevation of privilege vulnerability exists in Microsoft SharePoint Foundation 2013 Service Pack 1 when it does not properly sanitize a specially crafted web request to an affected SharePoint server, aka "Microsoft SharePoint Cross Site Scripting Vulnerability".
How severe is CVE-2017-8745?: CVE-2017-8745 has a CVSS 3.x base score of 5.4, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2017-8745 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (75th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2017-8745?: CVE-2017-8745 affects Microsoft Sharepoint Foundation. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2017-8745?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2017-8745 published?: CVE-2017-8745 was published on 2017-09-13 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:microsoft:sharepoint_foundation:2013:sp1:*:*:*:*:*:*

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