CVE-2026-56164
KEVCRITICAL 9.8EPSS 26.6%
Missing authentication for critical function in Microsoft Office SharePoint allows an unauthorized attacker to elevate privileges over a network.
- CVSS v3.1
- 9.8 CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - CVSS v3.1
- 5.3 MEDIUM
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N - EPSS
- 26.64% chance of exploitation in the next 30 days, 98th percentile
- CISA KEV
- added 2026-07-14
- Published
- 2026-07-14
- Updated
- 2026-08-31
Proof-of-concept exploits (2)
- sentinel-aidefense/CVE-2026-56164-EXP13★ · 2026-07-15
- sam00/POC-CVE-2026-56164-exploit2★ · 2026-08-06