# .NET Elevation of Privilege Vulnerability

CVE record · `CVE-2026-32177`

- **Identifiers:** `CVE-2026-32177`
- **State:** Confirmed
- **Severity:** CVSS 7.3 High
- **Critical:** No
- **CNA:** microsoft
- **Weakness (CWE):** [CWE-20](https://cwe.mitre.org/data/definitions/20.html) · [CWE-122](https://cwe.mitre.org/data/definitions/122.html)
- **Tags:** [Memory corruption](https://agentprime.io/advisories/tag/memory-corruption.md) · [CWE-20](https://agentprime.io/advisories/tag/cwe-20.md)
- **Technologies:** [Microsoft .NET 10.0](https://agentprime.io/advisories/technology/microsoft-net-10-0.md) · [Microsoft .NET 8.0](https://agentprime.io/advisories/technology/microsoft-net-8-0.md) · [Microsoft .NET 9.0](https://agentprime.io/advisories/technology/microsoft-net-9-0.md) · [Microsoft .NET Framework 3.5](https://agentprime.io/advisories/technology/microsoft-net-framework-3-5.md) · [Microsoft .NET Framework 3.5 AND 4.7.2](https://agentprime.io/advisories/technology/microsoft-net-framework-3-5-and-4-7-2.md) · [Microsoft .NET Framework 3.5 AND 4.8](https://agentprime.io/advisories/technology/microsoft-net-framework-3-5-and-4-8.md) · [Microsoft .NET Framework 3.5 AND 4.8.1](https://agentprime.io/advisories/technology/microsoft-net-framework-3-5-and-4-8-1.md) · [Microsoft .NET Framework 4.6.2/4.7/4.7.1/4.7.2](https://agentprime.io/advisories/technology/microsoft-net-framework-4-6-2-4-7-4-7-1-4-7-2.md) · [Microsoft .NET Framework 4.8](https://agentprime.io/advisories/technology/microsoft-net-framework-4-8.md) · [Microsoft Visual Studio 2022 version 17.12](https://agentprime.io/advisories/technology/microsoft-visual-studio-2022-version-17-12.md) · [Microsoft Visual Studio 2022 version 17.14](https://agentprime.io/advisories/technology/microsoft-visual-studio-2022-version-17-14.md) · [Microsoft Visual Studio 2026 version 18.5](https://agentprime.io/advisories/technology/microsoft-visual-studio-2026-version-18-5.md)
- **Published:** 12 May 2026
- **Updated:** 10 Aug 2026
- **Reviewed by a person:** No

Published by the CVE Program (CNA: microsoft) at 12 May 2026, 16:58 UTC. agentprime has not analysed this yet, so whether it affects any app is not known. This CVE names a vendor and product rather than a package, so the lockfile check doesn’t match it.

## Affected products, as the CNA wrote them

- Vendor: Microsoft. Product: .NET 10.0.
  - affected: `10.0.0 to before 10.0.8` (custom)
- Vendor: Microsoft. Product: .NET 8.0.
  - affected: `8.0.0 to before 8.0.27` (custom)
- Vendor: Microsoft. Product: .NET 9.0.
  - affected: `9.0.0 to before 9.0.16` (custom)
- Vendor: Microsoft. Product: Microsoft .NET Framework 3.5.
  - affected: `3.5.0 to before 4.8.9334.0 and 4.8.4802.0` (custom)
- Vendor: Microsoft. Product: Microsoft .NET Framework 3.5 AND 4.7.2.
  - affected: `4.7.0 to before 4.8.9334.0 and 4.8.4802.0` (custom)
- Vendor: Microsoft. Product: Microsoft .NET Framework 3.5 AND 4.8.
  - affected: `4.8.0 to before 4.8.9334.0 and 4.8.4802.0` (custom)
- Vendor: Microsoft. Product: Microsoft .NET Framework 3.5 AND 4.8.1.
  - affected: `4.8.1 to before 4.8.9334.0 and 4.8.4802.0` (custom)
- Vendor: Microsoft. Product: Microsoft .NET Framework 4.6.2/4.7/4.7.1/4.7.2.
  - affected: `4.7.0 to before 4.8.9334.0 and 4.8.4802.0` (custom)
- Vendor: Microsoft. Product: Microsoft .NET Framework 4.8.
  - affected: `4.8.0 to before 4.8.9334.0 and 4.8.4802.0` (custom)
- Vendor: Microsoft. Product: Microsoft Visual Studio 2022 version 17.12.
  - affected: `17.12.0 to before 17.12.20` (custom)
- Vendor: Microsoft. Product: Microsoft Visual Studio 2022 version 17.14.
  - affected: `17.14.0 to before 17.14.32` (custom)
- Vendor: Microsoft. Product: Microsoft Visual Studio 2026 version 18.5.
  - affected: `18.5.0 to before 18.5.3` (custom)

## Not analysed yet

We haven’t published our own analysis of this CVE. If a person reviews it, this page will say what’s affected and what has to be true for it to matter.

## Severity and exploitation

- 7.3 High, CVSS 3.1: `CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:L/E:U/RL:O/RC:C`, from CNA (microsoft) (used for this record)
- 7.3 High, CVSS 3.1: `CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:L`, from ADP (redhat-SADP)

- **CISA KEV:** Not listed.
- **EPSS:** 0.0064, the 50th percentile, on 7 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

## Timeline

This record came from the full history of the CVE Program, published 12 May 2026. New records show when each source confirmed them.

## Sources

- [CVE List: CVE-2026-32177](https://www.cve.org/CVERecord?id=CVE-2026-32177)
- [NVD: CVE-2026-32177](https://nvd.nist.gov/vuln/detail/CVE-2026-32177)

### References from the CNA

- <https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-32177> (vendor-advisory, patch)

Facts on this page come from the CVE List as the CNA published them, with CVSS from the sources named above, CISA KEV and FIRST EPSS. Vendors, products and versions are shown as the CNA wrote them. We don’t reproduce the CVE’s description.

## Check whether this affects you

This CVE names a vendor and product rather than a package, so the lockfile check doesn’t match it. Compare the affected versions above with what you run.

- With the agentprime MCP server (<https://api.agentprime.io/mcp>), `get_advisory` returns this record and `search_advisories` finds related ones. Setup: <https://agentprime.io/mcp.md>
- As JSON: <https://api.agentprime.io/v1/advisories/CVE-2026-32177>
- Everything that needs attention now: <https://agentprime.io/advisories/critical.md>

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The web page: <https://agentprime.io/advisories/CVE-2026-32177/>. Everything for agents: <https://agentprime.io/llms.txt>.