How severe is CVE-2017-8629?

CVE-2017-8629 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-2017-8629 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (82nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2017-8629?

CVE-2017-8629 affects Microsoft Sharepoint Server. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2017-8629?

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

When was CVE-2017-8629 published?

CVE-2017-8629 was published on 2017-09-13 and last updated on 2026-06-17.

CVE-2017-8629

CVE-2017-8629 is a medium-severity vulnerability in Microsoft Sharepoint Server 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% (82nd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Microsoft Sharepoint Server
Published: 2017-09-13
Last modified: 2026-06-17

Description

Microsoft SharePoint Server 2013 Service Pack 1 allows an elevation of privilege vulnerability when it fails to properly sanitize a specially crafted web request to an affected SharePoint server, aka "Microsoft SharePoint XSS Vulnerability".

Frequently asked questions

What is CVE-2017-8629?: Microsoft SharePoint Server 2013 Service Pack 1 allows an elevation of privilege vulnerability when it fails to properly sanitize a specially crafted web request to an affected SharePoint server, aka "Microsoft SharePoint XSS Vulnerability".
How severe is CVE-2017-8629?: CVE-2017-8629 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-2017-8629 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (82nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2017-8629?: CVE-2017-8629 affects Microsoft Sharepoint Server. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2017-8629?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2017-8629 published?: CVE-2017-8629 was published on 2017-09-13 and last updated on 2026-06-17.

References

Affected products (1)

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

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