Microsoft Office SharePoint Remote Code Execution Vulnerability

CVE

CVE-2026-69943

Severity

Important

CVSS base score

8.8

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C

Impact

Remote Code Execution

Exploitation detected

Not reported by MSRC

Publicly disclosed

No

Exploitability

Exploitation Less Likely

Component

Microsoft Office SharePoint

Weakness

CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

Issued by

Microsoft

Customer action

Required: apply the update

Affected products

Microsoft SharePoint Server Subscription Edition

Updates that fix it

KB5002927: Microsoft SharePoint Server Subscription Edition (restart required)

CISA KEV

Not listed in the collected catalog

EPSS

1.2%; scored 25 Oct 2026

Public exploit code

No Nuclei template listed

Published

13 Oct 2026 07:00 UTC

Last revised

13 Oct 2026 07:00 UTC

Revision note

Information published.

• MSRC advisory
• NVD
• CVE.org
• October 2026
• KB5002927

Microsoft security releases

Complete at observationRead 25 Oct 2026 at 17:11 UTC

CISA KEV

Complete at observationRead 25 Oct 2026 at 17:11 UTC

FIRST EPSS

Complete at observationRead 25 Oct 2026 at 17:11 UTC

Public exploit code

Complete at observationRead 25 Oct 2026 at 17:11 UTC

Coverage describes the sources at this observation. A complete read then does not establish their current position.

1. 25 Oct 2026 · 17:12:51 UTC EPSS1.0%; scored 24 Oct 2026 → 1.2%; scored 25 Oct 2026
2. 25 Oct 2026 · 01:34:18 UTC EPSS1.0%; scored 23 Oct 2026 → 1.0%; scored 24 Oct 2026
3. 23 Oct 2026 · 15:51:28 UTC EPSS1.0%; scored 22 Oct 2026 → 1.0%; scored 23 Oct 2026
4. 23 Oct 2026 · 09:33:49 UTC Public exploit codeUnknown: exploit-code evidence is incomplete or retained → No Nuclei template listed
5. 23 Oct 2026 · 09:33:49 UTC CISA KEVUnknown: catalog evidence is incomplete or retained → Not listed in the collected catalog
6. 23 Oct 2026 · 09:33:49 UTC Source coverage: public-exploit-codeIncomplete → Current
7. 23 Oct 2026 · 09:33:49 UTC Source coverage: first-epssIncomplete → Current
8. 23 Oct 2026 · 09:33:49 UTC Source coverage: cisa-kevIncomplete → Current
9. 23 Oct 2026 · 09:33:49 UTC Source coverage: msrc-cvrfIncomplete → Current
10. 23 Oct 2026 · 08:31:50 UTC Public exploit codeNo Nuclei template listed → Unknown: exploit-code evidence is incomplete or retained
11. 23 Oct 2026 · 08:31:50 UTC CISA KEVNot listed in the collected catalog → Unknown: catalog evidence is incomplete or retained
12. 23 Oct 2026 · 08:31:50 UTC Source coverage: public-exploit-codeCurrent → Incomplete

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