# KB5026455: June 2023 security update

KB5026455, released June 13, 2023, fixes 4 CVEs in Microsoft Visual Studio 2015 Update 3. None of them is reported as exploited. Patch Radar priority: High. The product is no longer supported.

- Web page: https://patchblox.com/security/fix/microsoft/kb5026455
- Platform: Microsoft
- Released: Jun 13, 2023
- Priority: High (Closes CVE-2023-27911, high severity)
- CVEs: 4, exploited: 0, on CISA KEV: 0
- Vendor advisory: https://support.microsoft.com/help/5026455

## Applies to

| Product | Release | Fixed in |
|---|---|---|
| [Microsoft Visual Studio 2015 Update 3](https://patchblox.com/security/data/product/microsoft/microsoft-visual-studio-2015-update-3.md) |  |  |

## CVEs this fix closes

| CVE | Priority | Component | CVSS | EPSS | Exploitation |
|---|---|---|---:|---:|---|
| [CVE-2023-27911](https://patchblox.com/security/data/cve/CVE-2023-27911.md) | High | Visual Studio | 7.8 | 0.0064 |  |
| [CVE-2023-27910](https://patchblox.com/security/data/cve/CVE-2023-27910.md) | High | Visual Studio | n/a | 0.0053 |  |
| [CVE-2023-27909](https://patchblox.com/security/data/cve/CVE-2023-27909.md) | High | Visual Studio | n/a | 0.0049 |  |
| [CVE-2023-33139](https://patchblox.com/security/data/cve/CVE-2023-33139.md) | Routine | Visual Studio | 5.5 | 0.0082 |  |

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Data as of 2026-11-07T06:34:28Z 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 Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo