VDB
msrc_CVE-2026-45659
msrc_CVE-2026-45659
PUBLISHED
CVSS 8.800000190734863 HIGH
Risk Scores
CVSS 3.1
8.800000190734863
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Microsoft SharePoint Server 2019 <16.0.10417.20128 | ||
| Microsoft SharePoint Enterprise Server 2016 16.0.5552.1002 | ||
| Microsoft SharePoint Server Subscription Edition 16.0.19725.20280 | ||
| Microsoft SharePoint Enterprise Server 2016 <16.0.5552.1002 | ||
| Microsoft SharePoint Server 2019 16.0.10417.20128 | ||
| Microsoft SharePoint Server Subscription Edition <16.0.19725.20280 |
Exploit Intelligence
- jenniferreire26/CVE-2026-45659 (github-poc-repo)
- jenniferreire26/CVE-2026-45659 (github-poc)
- daniel30padd/CVE-2026-45659 (github-poc-repo)
- daniel30padd/CVE-2026-45659 (github-poc)
- CVE-2026-45659 Microsoft SharePoint Server Deserialization RCE. (github-poc-repo)
- CVE-2026-45659 Microsoft SharePoint Server Deserialization RCE. (github-poc)
- CVE-2026-45659 - Draft (github-poc)
- CVE-2026-45659 - Draft (github-poc-repo)
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-45659 (circl)
- https://support.microsoft.com/help/5002863 (circl)
…and 6 more exploits
Timeline
- May 12, 2026 CVE Published
- May 21, 2026 CVE Updated
- May 23, 2026 Security Advisory
- May 23, 2026 Security Advisory
References
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-45659 advisory
- https://msrc.microsoft.com/csaf/advisories/2026/msrc_cve-2026-45659.json advisory
- https://www.microsoft.com/en-us/msrc/exploitability-index?rtc=1 url
- https://support.microsoft.com/lifecycle url
- https://www.first.org/cvss url
- https://support.microsoft.com/help/5002868 fix
- https://support.microsoft.com/help/5002870 fix
- https://support.microsoft.com/help/5002863 fix