Integer overflow in Microsoft .Net Framework 3.5
CVE-2026-85363
Integer overflow or wraparound in .NET Framework allows an unauthorized attacker to elevate privileges over a network.
Vulnerability class: Integer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
- Microsoft .Net Framework 3.5
- Microsoft .Net Framework 3.5 And 4.6.2/4.7/4.7.1/4.7.2
- Microsoft .Net Framework 3.5 And 4.7.2
- Microsoft .Net Framework 3.5 And 4.8
- Microsoft .Net Framework 3.5 And 4.8.1
- Microsoft .Net Framework 4.6.2/4.7/4.7.1/4.7.2
- Microsoft .Net Framework 4.8
- Microsoft .Net Framework 4.8.1
- Microsoft Visual Studio 2022 Version 17.14
- Microsoft Visual Studio 2026 Version 18.10
Weakness classification (CWE)
References
- .NET Framework Elevation of Privilege Vulnerability (vendor-advisory, patch)
Frequently asked questions
- What is CVE-2026-85363?
- CVE-2026-85363 is a high-severity vulnerability in Microsoft .Net Framework 3.5, classified under Integer Overflow or Wraparound. CVSS score: 8.8/10. Published 2026-10-13.
- How severe is CVE-2026-85363?
- High severity. CVSS v3 base score is 8.8 out of 10.