CVE-2026-55040 Microsoft Microsoft SharePoint Enterprise…
Weak authentication in Microsoft Office SharePoint allows an unauthorized attacker to bypass a security feature over a network.
- CVSS
- 9.1 Critical
- EPSS
- 70%
- Percentile
- 99
- Published
- 2026-07-14
- Force
- 10 of 12
- Public PoC
- 5
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N/E:U/RL:O/RC:C
On CISA’s exploited list
Microsoft SharePoint Weak Authentication Vulnerability
- Added
- 2026-08-18
- Federal patch deadline
- 2026-08-21
- Ransomware use
- not known