Microsoft Office SharePoint Remote Code Execution Vulnerability
Assessment
Improper limitation of a pathname to a restricted directory ('path traversal') in Microsoft Office SharePoint allows an authorized attacker to execute code over a network.
- Severity
- Important
- CVSS base score
- 8.8CVSS: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
- EPSS, next 30 days
- 1.2%Higher than 66.9% of scored CVEs · FIRST model run 25 Oct 2026 · about EPSS
- Public exploit code
- No Nuclei template lists it
- Exploitability
- Exploitation Less Likely
- Publicly disclosed
- No
- Customer action
- Required: apply the update
- Component
- Microsoft Office SharePoint
- Weakness
- CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
- Issued by
- Microsoft
- Published
- 13 Oct 2026 · October 2026
- Last revised
- 13 Oct 2026
- Attack vector
- NetworkAV:N
- Attack complexity
- LowAC:L
- Privileges required
- LowPR:L
- User interaction
- NoneUI:N
- Scope
- UnchangedS:U
- Confidentiality
- HighC:H
- Integrity
- HighI:H
- Availability
- HighA:H
Updates that fix it
1 KB| KB | Type | Restart | Applies to | Other CVEs |
|---|---|---|---|---|
| KB5002927 | Security Update | Required | Microsoft SharePoint Server Subscription Edition | All CVEs in KB5002927 |
What changed
First observed 14 Oct 2026- 25 Oct 2026 · 17:12:51 UTC EPSS1.0%; scored 24 Oct 2026 → 1.2%; scored 25 Oct 2026
- 25 Oct 2026 · 01:34:18 UTC EPSS1.0%; scored 23 Oct 2026 → 1.0%; scored 24 Oct 2026
- 23 Oct 2026 · 15:51:28 UTC EPSS1.0%; scored 22 Oct 2026 → 1.0%; scored 23 Oct 2026
- 23 Oct 2026 · 09:33:49 UTC Public exploit codeUnknown: exploit-code evidence is incomplete or retained → No Nuclei template listed
- 23 Oct 2026 · 09:33:49 UTC CISA KEVUnknown: catalog evidence is incomplete or retained → Not listed in the collected catalog
- 23 Oct 2026 · 09:33:49 UTC Source coverage: public-exploit-codeIncomplete → Current
- 23 Oct 2026 · 09:33:49 UTC Source coverage: first-epssIncomplete → Current
- 23 Oct 2026 · 09:33:49 UTC Source coverage: cisa-kevIncomplete → Current
- 23 Oct 2026 · 09:33:49 UTC Source coverage: msrc-cvrfIncomplete → Current
- 23 Oct 2026 · 08:31:50 UTC Public exploit codeNo Nuclei template listed → Unknown: exploit-code evidence is incomplete or retained
- 23 Oct 2026 · 08:31:50 UTC CISA KEVNot listed in the collected catalog → Unknown: catalog evidence is incomplete or retained
- 23 Oct 2026 · 08:31:50 UTC Source coverage: public-exploit-codeCurrent → Incomplete
Show 14 more recent changes
- 23 Oct 2026 · 08:31:50 UTCSource coverage: first-epss Current → Incomplete
- 23 Oct 2026 · 08:31:50 UTCSource coverage: cisa-kev Current → Incomplete
- 23 Oct 2026 · 08:31:50 UTCSource coverage: msrc-cvrf Current → Incomplete
- 22 Oct 2026 · 17:33:15 UTCEPSS 1.0%; scored 21 Oct 2026 → 1.0%; scored 22 Oct 2026
- 21 Oct 2026 · 21:47:24 UTCEPSS 1.0%; scored 20 Oct 2026 → 1.0%; scored 21 Oct 2026
- 21 Oct 2026 · 06:34:48 UTCAffected products Microsoft SharePoint Enterprise Server 2016, Microsoft SharePoint Server 2019, Microsoft SharePoint Server Subscription Edition → Microsoft SharePoint Server Subscription Edition
- 20 Oct 2026 · 20:53:31 UTCEPSS 1.0%; scored 19 Oct 2026 → 1.0%; scored 20 Oct 2026
- 19 Oct 2026 · 15:12:40 UTCEPSS 1.0%; scored 18 Oct 2026 → 1.0%; scored 19 Oct 2026
- 18 Oct 2026 · 14:54:30 UTCEPSS 1.0%; scored 16 Oct 2026 → 1.0%; scored 18 Oct 2026
- 18 Oct 2026 · 14:54:30 UTCLink: October 2026 → /security?release=2026-Oct#cves
- 16 Oct 2026 · 16:13:25 UTCEPSS 0.8%; scored 15 Oct 2026 → 1.0%; scored 16 Oct 2026
- 15 Oct 2026 · 21:30:54 UTCEPSS 0.8%; scored 14 Oct 2026 → 0.8%; scored 15 Oct 2026
- 15 Oct 2026 · 21:30:54 UTCUpdates that fix it KB5002927: Microsoft SharePoint Server Subscription Edition → KB5002927: Microsoft SharePoint Server Subscription Edition (restart required)
- 15 Oct 2026 · 01:07:54 UTCEPSS Not scored → 0.8%; scored 14 Oct 2026
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Explore global source statements, affected packages and advisory history for CVE-2026-69943. The catalog has a separate collection scope from Microsoft release records.
Collected exploitation and prediction evidence
Risk source coverageCISA KEV is observed exploitation evidence. FIRST EPSS is a dated prediction of exploitation in the next 30 days. Missing scores are unknown. This collector requests predictions only for explicit CVE aliases in the public NuGet archive; Microsoft release views retain their existing prediction scope.
No collected risk observation for these identifiers. This does not establish absence of exploitation or a zero probability.
cve-program · CVE-2026-69943
PublishedMicrosoft Office SharePoint Remote Code Execution Vulnerability
Improper limitation of a pathname to a restricted directory ('path traversal') in Microsoft Office SharePoint allows an authorized attacker to execute code over a network.
- Source published
- 13 Oct 2026 19:00:12 UTC
- Source modified
- 25 Oct 2026 18:42:00 UTC
- Observed here
- 25 Oct 2026 20:02:02 UTC
- Source terms
- CVE Program Terms of Use
Original source record · Cite this exact observation · Complete original publisher JSON
This view projects the publisher's source fields for reading; the original JSON retains additional fields and CVE enrichment containers. Attribution: cve-program · CVE Program Terms of Use. Source text is retained; field grouping and change labels are provided by ChangeIntel.
CVSS 3.1 · 8.8 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