CVE-2026-35433 | .NET Elevation of Privilege Vulnerability

Improper input validation in .NET allows an unauthorized attacker to elevate privileges locally.

Published: 2026-05-12 Last update: 2026-06-18 Assigner: [email protected] Source: [email protected]
NVD Status：Analyzed，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2026-35433 is rated Moderate Risk (44/100): CVSS High severity, with low exploitation likelihood (EPSS 0.54%). Review affected assets and schedule remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2026-35433

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 0.04% 0.54% +0.50%
2 2026-05-22 0.11% 0.04% -0.07%
3 2026-05-13 — 0.11% —

Full EPSS history (3 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2026-35433

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
7.3 3.1 HIGH
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:L Click to expand
Attack vector (AV:L)
They already need access on the box, or another person has to do something wrong; it’s not a remote drive-by.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:R)
A real person has to do something—click, install, enable—otherwise it doesn’t land.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:L)
Might cause slowdowns, glitches, or partial disruption—not a full brick.
 1.8 5.5 [email protected]

Weakness enumeration for CVE-2026-35433

GitHub Security Advisory for CVE-2026-35433

GHSA-8x9c-mqxv-q2pp · Severity: high · Ecosystem: nuget — Microsoft Security Advisory CVE-2026-35433 – .NET Elevation of Privilege Vulnerability

OS Trackers for CVE-2026-35433

vendor priority summary link
ubuntu medium CVE-2026-35433 medium priority: Ubuntu including 5 source packages (dotnet10, dotnet6, dotnet7, dotnet8, dotnet9), 45 status rows across 9 suites (bionic, focal, jammy, noble, questing, resolute, trusty, upstream, xenial): DNE 31, not-affected 8, needs-triage 5, ignored 1. https://ubuntu.com/security/CVE-2026-35433

Affected software / configurations for CVE-2026-35433

Vendor Product Version Raw CPE
microsoft .net_framework 4.8 cpe:2.3:a:microsoft:.net_framework:4.8:*:*:*:*:*:*:*
microsoft .net_framework 3.5 cpe:2.3:a:microsoft:.net_framework:3.5:*:*:*:*:*:*:*
microsoft .net >= 8.0.0, < 8.0.27 cpe:2.3:a:microsoft:.net:*:*:*:*:*:*:*:*
microsoft .net >= 9.0.0, < 9.0.16 cpe:2.3:a:microsoft:.net:*:*:*:*:*:*:*:*
microsoft .net >= 10.0.0, < 10.0.8 cpe:2.3:a:microsoft:.net:*:*:*:*:*:*:*:*
microsoft .net_framework 4.8.1 cpe:2.3:a:microsoft:.net_framework:4.8.1:*:*:*:*:*:*:*
microsoft .net_framework 4.7.2 cpe:2.3:a:microsoft:.net_framework:4.7.2:*:*:*:*:*:*:*

References for CVE-2026-35433

cvelogic Threat Intelligence