Buffer overflow in Microsoft .Net Framework 3.5
CVE-2026-32177
Heap-based buffer overflow in .NET allows an unauthorized attacker to elevate privileges locally.
Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)
EPSS: 0.001 (26.5th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.3 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:L.
Affected products
- Microsoft .Net Framework 3.5 — versions 3.5.0
- Microsoft .Net Framework 3.5 And 4.7.2 — versions 4.7.0
- Microsoft .Net Framework 3.5 And 4.8 — versions 4.8.0
- Microsoft .Net Framework 3.5 And 4.8.1 — versions 4.8.1
- Microsoft .Net Framework 4.6.2/4.7/4.7.1/4.7.2 — versions 4.7.0
- Microsoft .Net Framework 4.8 — versions 4.8.0
- Microsoft Visual Studio 2017 Version 15.9 (Includes 15.0 - 15.8) — versions 15.9.0
- Microsoft Visual Studio 2019 Version 16.11 (Includes 16.0 - 16.10) — versions 16.11.0
- Microsoft Visual Studio 2022 Version 17.12 — versions 17.12.0
- Microsoft Visual Studio 2022 Version 17.14 — versions 17.14.0
Weakness classification (CWE)
References
- .NET Elevation of Privilege Vulnerability (vendor-advisory, patch)
Frequently asked questions
- What is CVE-2026-32177?
- CVE-2026-32177 is a high-severity vulnerability in Microsoft .Net Framework 3.5, classified under Improper Input Validation. CVSS score: 7.3/10. Published 2026-05-12.
- How severe is CVE-2026-32177?
- High severity. CVSS v3 base score is 7.3 out of 10.