Vulnerability · CVE-2026-69804
Time-of-check time-of-use (toctou) race condition in Microsoft Office SharePoint allows an authorized attacker to execute code over a network.
Published Sep 8, 2026 · catalog updated Sep 9, 2026 · sharepoint server
Last checked Nov 2, 2026. A connected source was read within the last 7 days.
Check if you run it
No confirmed exploitation is on record for CVE-2026-69804. EPSS is 0.51%. Act only if a listed version of sharepoint server is installed.
Gaps on this record
- No vendor fix or required action is stored. Compare the linked advisory before you change production.
Same product and reporting
- CVE-2026-108452 · High
- CVE-2026-70259 · Medium
- CVE-2026-70267 · High
- CVE-2026-69943 · High
- CVE-2026-105719 · Medium
- Severity
- High7.5
- Known exploitation
- Not in CISA/VulnCheck KEV
- EPSS
- 0.51%
- Remediation
- Version ranges on file
- Affected products
- cpe microsoft/sharepoint server
Time-of-check time-of-use (toctou) race condition in Microsoft Office SharePoint allows an authorized attacker to execute code over a network.
Are you affected?
Enter the version you run. The result uses only the ranges stored on this record.
The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.
- cpe microsoft/sharepoint server< 16.0.20326.20090
How to fix CVE-2026-69804
Upgrade
CVE-2026-69804 lists a fix boundary at 16.0.20326.20090. Compare the installed build with that boundary before you change production.
Version check
Affected < 16.0.20326.20090
Advisory
Open the inventory_critical record and follow its fix.
Official advisories
What to do
Three questions, each answered from this record only. Confirm the vendor advisory before you patch.
Should you patch?
No confirmed exploitation is on record for CVE-2026-69804. EPSS is 0.51%. Act only if a listed version of sharepoint server is installed.
Which versions are affected?
Compare what you have installed with microsoft/sharepoint server < 16.0.20326.20090. Compare the installed version with the linked vendor advisory before you change production.
What should an analyst verify?
CWE-367: Time-of-check Time-of-use (TOCTOU) Race Condition. EPSS 0.51%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.
Technology hubs
Code
The project this record applies to. Exploit listings stay in References.
No public source repository is identified for this product.
Timeline
Detection, updates, and resolution for this record.
Sep 8, 2026 · Monitored products — critical
Detected
Time-of-check time-of-use (toctou) race condition in Microsoft Office SharePoint allows an authorized attacker to execute code over a network.
Sep 9, 2026 · Monitored products — critical
Updated
Time-of-check time-of-use (toctou) race condition in Microsoft Office SharePoint allows an authorized attacker to execute code over a network.
Sources
- Monitored products — criticalVendor advisoryCVE-2026-69804
Time-of-check time-of-use (toctou) race condition in Microsoft Office SharePoint allows an authorized attacker to execute code over a network.
nvd.nist.gov
References
Freshness
Last verified in this catalog Nov 2, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.
- Monitored products — criticalNov 2, 2026