CVE catalog
CVE-2026-45659
Deserialization of untrusted data in Microsoft Office SharePoint allows an authorized attacker to execute code over a network.
- Severity
- High · CVSS 8.8
- Published
- Source
- [NVD] · [CVE record]
- Exploitation
- CISA Known Exploited Vulnerabilities
- EPSS
- 80.24% · Oct 27, 2026
Microsoft SharePoint Server contains a deserialization of untrusted data vulnerability which allows an authorized attacker to execute code over a network.
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Cpe | sharepoint_server | Not reported | 16.0.19725.20280 | fixed |
| Cpe | sharepoint_server | Not reported | Not reported | unknown |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Cpe | sharepoint_server | cpe | Not reported | 16.0.19725.20280 | Not reported | Not reported | Not reported |
OpenFactory catalog packages
No matching packages in this catalog.
Observed:
References
- [https://nvd.nist.gov/vuln/detail/CVE-2026-45659]
- [https://wid.cert-bund.de/.well-known/csaf/white/2026/wid-sec-w-2026-1652.json]
- [https://www.cisa.gov/known-exploited-vulnerabilities-catalog]
[CERT-Bund public advisories] · [CISA Known Exploited Vulnerabilities (OSINT)] · [FIRST EPSS] · [National Vulnerability Database (NVD)]