# KB5002880: June 2026 security update

KB5002880, released June 9, 2026, fixes 30 CVEs in Microsoft SharePoint Enterprise Server 2016. One of them is being exploited (CVE-2026-58644); 1 on CISA KEV. Patch Radar priority: Patch now. The product is no longer supported.

- Web page: https://patchblox.com/security/fix/microsoft/kb5002880
- Platform: Microsoft
- Released: Jun 9, 2026
- Priority: Patch now (Closes CVE-2026-58644, exploited (CISA KEV))
- CVEs: 30, exploited: 1, on CISA KEV: 1
- Vendor advisory: https://support.microsoft.com/help/5002880

## Applies to

| Product | Release | Fixed in |
|---|---|---|
| [Microsoft SharePoint Enterprise Server 2016](https://patchblox.com/security/data/product/microsoft/microsoft-sharepoint-enterprise-server-2016.md) |  |  |

## CVEs this fix closes

| CVE | Priority | Component | CVSS | EPSS | Exploitation |
|---|---|---|---:|---:|---|
| [CVE-2026-58644](https://patchblox.com/security/data/cve/CVE-2026-58644.md) | Patch now | Microsoft Office SharePoint | 9.8 | 0.1587 | CISA KEV |
| [CVE-2026-45481](https://patchblox.com/security/data/cve/CVE-2026-45481.md) | Urgent | Microsoft Office SharePoint | 7.3 | 0.0063 | More likely |
| [CVE-2026-45456](https://patchblox.com/security/data/cve/CVE-2026-45456.md) | Urgent | Microsoft Office | 8.4 | 0.0044 |  |
| [CVE-2026-45458](https://patchblox.com/security/data/cve/CVE-2026-45458.md) | Urgent | Microsoft Office | 8.4 | 0.0044 |  |
| [CVE-2026-45484](https://patchblox.com/security/data/cve/CVE-2026-45484.md) | High | Microsoft Office SharePoint | 8.8 | 0.3354 |  |
| [CVE-2026-47298](https://patchblox.com/security/data/cve/CVE-2026-47298.md) | High | Microsoft Office SharePoint | 8.0 | 0.0062 |  |
| [CVE-2026-44819](https://patchblox.com/security/data/cve/CVE-2026-44819.md) | High | Microsoft Office | 7.8 | 0.0046 |  |
| [CVE-2026-44824](https://patchblox.com/security/data/cve/CVE-2026-44824.md) | High | Microsoft Office | 7.8 | 0.0046 |  |
| [CVE-2026-45471](https://patchblox.com/security/data/cve/CVE-2026-45471.md) | High | Microsoft Office Word | 7.8 | 0.0046 |  |
| [CVE-2026-45475](https://patchblox.com/security/data/cve/CVE-2026-45475.md) | High | Microsoft Office | 7.8 | 0.0046 |  |
| [CVE-2026-45454](https://patchblox.com/security/data/cve/CVE-2026-45454.md) | Routine | Microsoft Office SharePoint | 6.5 | 0.0163 |  |
| [CVE-2026-48560](https://patchblox.com/security/data/cve/CVE-2026-48560.md) | Routine | Microsoft Office SharePoint | 5.4 | 0.0086 |  |
| [CVE-2026-33113](https://patchblox.com/security/data/cve/CVE-2026-33113.md) | Routine | Microsoft Office SharePoint | 5.4 | 0.0048 |  |
| [CVE-2026-45453](https://patchblox.com/security/data/cve/CVE-2026-45453.md) | Routine | Microsoft Office SharePoint | 5.4 | 0.0047 |  |
| [CVE-2026-45464](https://patchblox.com/security/data/cve/CVE-2026-45464.md) | Routine | Microsoft Office SharePoint | 5.4 | 0.0047 |  |
| [CVE-2026-45465](https://patchblox.com/security/data/cve/CVE-2026-45465.md) | Routine | Microsoft Office SharePoint | 5.4 | 0.0047 |  |
| [CVE-2026-47636](https://patchblox.com/security/data/cve/CVE-2026-47636.md) | Routine | Microsoft Office SharePoint | 5.4 | 0.0047 |  |
| [CVE-2026-47639](https://patchblox.com/security/data/cve/CVE-2026-47639.md) | Routine | Microsoft Office SharePoint | 5.4 | 0.0047 |  |
| [CVE-2026-44821](https://patchblox.com/security/data/cve/CVE-2026-44821.md) | Routine | Microsoft Office | 5.5 | 0.0047 |  |
| [CVE-2026-45462](https://patchblox.com/security/data/cve/CVE-2026-45462.md) | Routine | Microsoft Office SharePoint | 4.6 | 0.0046 |  |
| [CVE-2026-45467](https://patchblox.com/security/data/cve/CVE-2026-45467.md) | Routine | Microsoft Office SharePoint | 4.6 | 0.0046 |  |
| [CVE-2026-45468](https://patchblox.com/security/data/cve/CVE-2026-45468.md) | Routine | Microsoft Office SharePoint | 4.6 | 0.0046 |  |
| [CVE-2026-45479](https://patchblox.com/security/data/cve/CVE-2026-45479.md) | Routine | Microsoft Office SharePoint | 4.6 | 0.0046 |  |
| [CVE-2026-45483](https://patchblox.com/security/data/cve/CVE-2026-45483.md) | Routine | Microsoft Office Project | 4.6 | 0.0046 |  |
| [CVE-2026-47637](https://patchblox.com/security/data/cve/CVE-2026-47637.md) | Routine | Microsoft Office SharePoint | 4.6 | 0.0046 |  |
| [CVE-2026-47638](https://patchblox.com/security/data/cve/CVE-2026-47638.md) | Routine | Microsoft Office SharePoint | 4.6 | 0.0046 |  |
| [CVE-2026-47640](https://patchblox.com/security/data/cve/CVE-2026-47640.md) | Routine | Microsoft Office SharePoint | 4.6 | 0.0046 |  |
| [CVE-2026-47641](https://patchblox.com/security/data/cve/CVE-2026-47641.md) | Routine | Microsoft Office SharePoint | 4.6 | 0.0046 |  |
| [CVE-2026-48562](https://patchblox.com/security/data/cve/CVE-2026-48562.md) | Routine | Microsoft Office SharePoint | 4.6 | 0.0046 |  |
| [CVE-2026-45485](https://patchblox.com/security/data/cve/CVE-2026-45485.md) | Routine | Microsoft Office | 3.3 | 0.0044 |  |

---

Data as of 2026-11-07T12:40:37Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo