CVE-2026-88200
CVE-2026-88200 is a high-severity vulnerability in Microsoft Sharepoint Server 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-270.
Key facts
- Severity: High (CVSS 3.x base score 8.8)
- EPSS exploit prediction: 1% (53rd percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-270
- Affected product: Microsoft Sharepoint Server
- Published:
- Last modified:
Description
Privilege context switching error in Microsoft Office SharePoint allows an authorized attacker to elevate privileges over a network.
Frequently asked questions
- What is CVE-2026-88200?
- Privilege context switching error in Microsoft Office SharePoint allows an authorized attacker to elevate privileges over a network.
- How severe is CVE-2026-88200?
- CVE-2026-88200 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-2026-88200 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (53rd percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2026-88200?
- CVE-2026-88200 affects Microsoft Sharepoint Server. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2026-88200?
- 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.
- When was CVE-2026-88200 published?
- CVE-2026-88200 was published on 2026-10-13 and last updated on 2026-10-14.
References
Affected products (1)
- cpe:2.3:a:microsoft:sharepoint_server:*:*:*:*:subscription:*:*:*
More vulnerabilities in Microsoft Sharepoint Server
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- CVE-2020-1210 — Critical (CVSS 9.9): <p>A remote code execution vulnerability exists in Microsoft SharePoint when the software fails to check the source…
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- CVE-2026-50522 — Critical (CVSS 9.8): Deserialization of untrusted data in Microsoft Office SharePoint allows an unauthorized attacker to execute code over a…
- CVE-2026-20963 — Critical (CVSS 9.8): Deserialization of untrusted data in Microsoft Office SharePoint allows an unauthorized attacker to execute code over a…
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