CVE catalog
CVE-2026-32177
Heap-based buffer overflow in .NET allows an unauthorized attacker to elevate privileges locally.
- Severity
- High · CVSS 7.3
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:L - Published
- Source
- [NVD] · [CVE record]
- EPSS
- 0.64% · Oct 25, 2026
A flaw was found in dotnet. A heap-based buffer overflow in .NET allows an unauthenticated attacker to elevate privileges locally. dotnet: .NET: heap-based buffer overflow allows an attacker to elevate privileges locally As this flaw allows an unauthenticated attacker to elevate privileges locally, it has been rated with an important severity. This vulnerability affects .NET running on Windows systems. Therefore, Red Hat products are not affected by this issue. The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Cpe | visual_studio_2022 | Not reported | 17.12.20 | fixed |
| Cpe | visual_studio_2022 | Not reported | 17.14.32 | fixed |
| Cpe | visual_studio_2026 | Not reported | 18.5.3 | fixed |
| Cpe | .net_framework | Not reported | Not reported | unknown |
| Cpe | .net | Not reported | 8.0.27 | fixed |
| Cpe | .net | Not reported | 9.0.16 | fixed |
| Cpe | .net | Not reported | 10.0.8 | fixed |
| Ubuntu | dotnet7 | 22.04 | 7.0.105-0ubuntu1~22.04.1 | vulnerable |
| Ubuntu | dotnet7 | 22.04 | 7.0.107-0ubuntu1~22.04.1 | vulnerable |
| Ubuntu | dotnet7 | 22.04 | 7.0.108-0ubuntu1~22.04.1 | vulnerable |
| Ubuntu | dotnet7 | 22.04 | 7.0.109-0ubuntu1~22.04.1 | vulnerable |
| Ubuntu | dotnet7 | 22.04 | 7.0.110-0ubuntu1~22.04.1 | vulnerable |
| Ubuntu | dotnet7 | 22.04 | 7.0.111-0ubuntu1~22.04.1 | vulnerable |
| Ubuntu | dotnet7 | 22.04 | 7.0.112-0ubuntu1~22.04.1 | vulnerable |
| Ubuntu | dotnet7 | 22.04 | 7.0.113-0ubuntu1~22.04.1 | vulnerable |
| Ubuntu | dotnet7 | 22.04 | 7.0.114-0ubuntu1~22.04.1 | vulnerable |
| Ubuntu | dotnet7 | 22.04 | 7.0.115-0ubuntu1~22.04.1 | vulnerable |
| Ubuntu | dotnet7 | 22.04 | 7.0.116-0ubuntu1~22.04.1 | vulnerable |
| Ubuntu | dotnet7 | 22.04 | 7.0.117-0ubuntu1~22.04.1 | vulnerable |
| Ubuntu | dotnet7 | 22.04 | 7.0.117-0ubuntu1~22.04.2 | vulnerable |
| Ubuntu | dotnet7 | 22.04 | 7.0.119-0ubuntu1~22.04.1 | vulnerable |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Cpe | visual_studio_2022 | cpe | Not reported | 17.12.20 | Not reported | Not reported | Not reported |
| Cpe | visual_studio_2022 | cpe | Not reported | 17.14.32 | Not reported | Not reported | Not reported |
| Cpe | visual_studio_2026 | cpe | Not reported | 18.5.3 | Not reported | Not reported | Not reported |
| Cpe | .net | cpe | Not reported | 8.0.27 | Not reported | Not reported | Not reported |
| Cpe | .net | cpe | Not reported | 9.0.16 | Not reported | Not reported | Not reported |
| Cpe | .net | cpe | Not reported | 10.0.8 | Not reported | Not reported | Not reported |
OpenFactory catalog packages
No matching packages in this catalog.
Observed:
References
- [https://nvd.nist.gov/vuln/detail/CVE-2026-32177]
- [https://osv.dev/vulnerability/UBUNTU-CVE-2026-32177]
- [https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-32177.json]
- [https://wid.cert-bund.de/.well-known/csaf/white/2026/wid-sec-w-2026-1488.json]
[CERT-Bund public advisories] · [FIRST EPSS] · [National Vulnerability Database (NVD)] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX]