CVE-2026-70332Critical
Microsoft Office SharePoint Spoofing Vulnerability
Assessment
Improper neutralization of input during web page generation ('cross-site scripting') in Microsoft Office SharePoint allows an unauthorized attacker to perform spoofing over a network.
- Severity
- Critical
- CVSS base score
- 9.6CVSS:3.1/
AV:N/ AC:L/ PR:N/ UI:R/ S:C/ C:H/ I:H/ A:H/ E:U/ RL:O/ RC:C - Impact
- Spoofing
- EPSS, next 30 days
- 0.9%Higher than 56.9% of scored CVEs · FIRST model run 26 Sep 2026 · about EPSS
- Exploitability
- Not assessed
- Publicly disclosed
- No
- Customer action
- Not required (service-side fix)
- Component
- Microsoft Office SharePoint
- Weakness
- CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
- Issued by
- Microsoft
- Published
- 6 Aug 2026 · August 2026
- Last revised
- 6 Aug 2026
Updates that fix it
0 KBsNo KB listed
MSRC lists no downloadable update, which usually means a service-side fix or a release-notes update. Check the MSRC advisory.
Affected products
Microsoft Office1 affected product
- Microsoft SharePoint Online