CVE-2026-32177

.NET Elevation of Privilege Vulnerability

7.3 HighFix available

Heap-based buffer overflow in .NET allows an unauthorized attacker to elevate privileges locally.

Attack profile

How easy it is to exploit

Attack vector: Local
Complexity: Low
Privileges needed: None
User interaction: Required

What an attacker can affect

Confidentiality: High
Integrity: High
Availability: Low

Exploit likelihood

0.64%Up 0.5 points since May 13, 2026

What each source reports

CVE List Score used 7.3

.NET Elevation of Privilege Vulnerability

Heap-based buffer overflow in .NET allows an unauthorized attacker to elevate privileges locally.

Record: CVE-2026-32177
CVSS 3.1: 7.3 HighCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:L/E:U/RL:O/RC:C
CVSS 3.1: 7.3 HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:L
Weakness: CWE-122, CWE-20, CWE-122
Updated: 2026-11-02

EUVDEUVD-2026-29572 7.3

Heap-based buffer overflow in .NET allows an unauthorized attacker to elevate privileges locally.

Record: EUVD-2026-29572
CVSS 3.1: 7.3 HighCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:L/E:U/RL:O/RC:C
Updated: 2026-11-02

NVD 7.3

Heap-based buffer overflow in .NET allows an unauthorized attacker to elevate privileges locally.

Record: CVE-2026-32177
CVSS 3.1: 7.3 HighCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:L
CVSS 3.1: 7.3 HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:L
Weakness: CWE-20, CWE-122, CWE-787
Updated: 2026-11-02

OSVALPINE-CVE-2026-32177 7.3

Heap-based buffer overflow in .NET allows an unauthorized attacker to elevate privileges locally.

Record: ALPINE-CVE-2026-32177
CVSS 3.1: 7.3 HighCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:L
Updated: 2026-11-03

OSVBELL-CVE-2026-32177 7.3

Record: BELL-CVE-2026-32177
CVSS 3.1: 7.3 HighCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:L
Updated: 2026-11-02

OSV 7.3

Heap-based buffer overflow in .NET allows an unauthorized attacker to elevate privileges locally.

Record: CVE-2026-32177
CVSS 3.1: 7.3 HighCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:L
Updated: 2026-11-02

OSVUBUNTU-CVE-2026-32177 7.3

Heap-based buffer overflow in .NET allows an unauthorized attacker to elevate privileges locally.

Record: UBUNTU-CVE-2026-32177
CVSS 3.1: 7.3 HighCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:L
CVSS 3.1: 7.3 HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:L
Updated: 2026-11-02

OSVBIT-dotnet-2026-32177 No score

.NET Elevation of Privilege Vulnerability

Heap-based buffer overflow in .NET allows an unauthorized attacker to elevate privileges locally.

Record: BIT-dotnet-2026-32177
Updated: 2026-11-02

OSVBIT-dotnet-sdk-2026-32177 No score

.NET Elevation of Privilege Vulnerability

Heap-based buffer overflow in .NET allows an unauthorized attacker to elevate privileges locally.

Record: BIT-dotnet-sdk-2026-32177
Updated: 2026-11-02

Affected products

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Affected packages

Affected packages
Package	Affected	Fixed
`dotnet10-runtime` Alpine:v3.23	before 10.0.8-r0	10.0.8-r0
`dotnet10-runtime` Alpine:v3.24	before 10.0.8-r0	10.0.8-r0
`dotnet8-runtime` Alpine:v3.21	before 8.0.27-r0	8.0.27-r0
`dotnet8-runtime` Alpine:v3.22	before 8.0.27-r0	8.0.27-r0
`dotnet8-runtime` Alpine:v3.23	before 8.0.27-r0	8.0.27-r0
`dotnet8-runtime` Alpine:v3.24	before 8.0.27-r0	8.0.27-r0
`dotnet9-runtime` Alpine:v3.21	before 9.0.16-r0	9.0.16-r0
`dotnet9-runtime` Alpine:v3.22	before 9.0.16-r0	9.0.16-r0
`dotnet9-runtime` Alpine:v3.23	before 9.0.16-r0	9.0.16-r0
`dotnet9-runtime` Alpine:v3.24	before 9.0.16-r0	9.0.16-r0

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Affected packages
Package	Affected	Fixed
`dotnet8-runtime` Alpaquita:25	8.0.17-r0 up to 8.0.27-r0	8.0.27-r0
`dotnet8-runtime` Alpaquita:stream	8.0.11-r1 up to 8.0.27-r0	8.0.27-r0
`dotnet` Bitnami	8.0.0 up to 8.0.27, 9.0.0 up to 9.0.16, 10.0.0 up to 10.0.8	8.0.279.0.1610.0.8
`dotnet-sdk` Bitnami	8.0.0 up to 8.0.27, 9.0.0 up to 9.0.16, 10.0.0 up to 10.0.8	8.0.279.0.1610.0.8
`dotnet7` Ubuntu:22.04:LTS	All versions, plus listed versions 7.0.105-0ubuntu1~22.04.17.0.107-0ubuntu1~22.04.17.0.108-0ubuntu1~22.04.17.0.109-0ubuntu1~22.04.17.0.110-0ubuntu1~22.04.1 Show 9 moreShow less 7.0.111-0ubuntu1~22.04.17.0.112-0ubuntu1~22.04.17.0.113-0ubuntu1~22.04.17.0.114-0ubuntu1~22.04.17.0.115-0ubuntu1~22.04.17.0.116-0ubuntu1~22.04.17.0.117-0ubuntu1~22.04.17.0.117-0ubuntu1~22.04.27.0.119-0ubuntu1~22.04.1	None known

History

History
Recorded	Changed	Sources
Nov 3, 2026	affected, aliases, references	OSV
Nov 2, 2026	first indexed	CVE List, EUVD, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2026-32177 is a high vulnerability (CVSS 7.3) in Microsoft .net, published May 12, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.64%, the 50th percentile. Fixed in dotnet10-runtime 10.0.8-r0.

References

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