Product / Microsoft
Microsoft SharePoint in CISA KEV
Answer CISA's KEV catalog lists 9 vulnerabilities in Microsoft SharePoint as of catalog 2026.09.23, 2.3% of Microsoft's 388 entries. First added 2021-11-03, latest 2026-08-18; 5 ransomware-linked.
- KEV entries
- 9
- Ransomware: known
- 555.6%
- First added
- 2021-11-03
- Latest added
- 2026-08-18
- Median days to due
- 3
- Open deadlines
- 0federal
TAdditions by year
| Year | Added |
|---|---|
| 2021 | 1 |
| 2022 | 0 |
| 2023 | 0 |
| 2024 | 1 |
| 2025 | 3 |
| 2026 | 4 |
WWeaknesses
| CWE | Entries | Share |
|---|---|---|
| CWE-502 Unsafe deserialization | 5 | 55.6% |
| CWE-1390 | 1 | 11.1% |
| CWE-287 Improper authentication | 1 | 11.1% |
| CWE-94 Code injection | 1 | 11.1% |
| CWE-20 Improper input validation | 1 | 11.1% |
EAll entries
| CVE | Vulnerability | Added | Due | Ransomware | CWE |
|---|---|---|---|---|---|
| CVE-2026-55040 | Microsoft SharePoint Weak Authentication Vulnerability | Unknown | CWE-1390 | ||
| CVE-2026-50522 | Microsoft SharePoint Deserialization of Untrusted Data Vulnerability | Unknown | CWE-502 | ||
| CVE-2026-58644 | Microsoft SharePoint Deserialization of Untrusted Data Vulnerability | Unknown | CWE-502 | ||
| CVE-2026-20963 | Microsoft SharePoint Deserialization of Untrusted Data Vulnerability | Unknown | CWE-502 | ||
| CVE-2025-49706 | Microsoft SharePoint Improper Authentication Vulnerability | Known | CWE-287 | ||
| CVE-2025-49704 | Microsoft SharePoint Code Injection Vulnerability | Known | CWE-94 | ||
| CVE-2025-53770 | Microsoft SharePoint Deserialization of Untrusted Data Vulnerability | Known | CWE-502 | ||
| CVE-2024-38094 | Microsoft SharePoint Deserialization Vulnerability | Known | CWE-502 | ||
| CVE-2019-0604 | Microsoft SharePoint Remote Code Execution Vulnerability | Known | CWE-20 |
Cite this
CISA's KEV catalog lists 9 vulnerabilities in Microsoft SharePoint. Source: Telemetry analysis of the CISA Known Exploited Vulnerabilities catalog, version 2026.09.23 (released 2026-09-23). https://glide-telemetry.pages.dev/products/microsoft-sharepoint/
Source: CISA KEV catalog v2026.09.23, released 2026-09-23. Windows end 2026-09-23.