CVE-2026-69806: .NET Elevation of Privilege Vulnerability

highCVSS 7CVE-2026-69806

Exposure of sensitive information to an unauthorized actor in .NET allows an authorized attacker to elevate privileges locally.

Details

Source: Microsoft Security Response Center (INTL · vendor-psirt · site)
Severity: high — CVSS 7
Published: 2026-09-08
Exploitation: Not in CISA KEV at last sync

Original advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-69806

Exploitation outlook

EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.

Moderate exploitation riskCVE-2026-698061.8% 30-day exploitation probability. Patch within normal cadence, watch for KEV listing. Riskier than 77% of all EPSS-scored CVEs.

Referenced CVEs

CVE	CSIRTS overview	External
CVE-2026-69806	coverage & exploitation status	NVD · CVE.org

Same CVEs, other sources

How other CERTs, PSIRTs and databases cover the vulnerabilities in this advisory.

Recent advisories for .NET Elevation of

A cluster of recent advisories against the same product widens the attack surface — attackers routinely chain freshly published CVEs on one product, so review these together.

highGHSA-527h-q9f6-p7qx: Microsoft Security Advisory CVE-2026-69439 – .NET and Visual Studio Elevation of Privileg…ghsa · 2026-09-09
highGHSA-mqvm-gmc4-6rv2: Duplicate Advisory: Microsoft Security Advisory CVE-2026-69439 – .NET and Visual Studio E…ghsa · 2026-09-08
highCVE-2026-69806: Exposure of sensitive information to an unauthorized actor in .NET allows an authorized attack…nvd · 2026-09-08
highCVE-2026-69805: External control of file name or path in .NET allows an unauthorized attacker to elevate privi…nvd · 2026-09-08
highCVE-2026-69439: Heap-based buffer overflow in .NET and Visual Studio allows an unauthorized attacker to elevat…nvd · 2026-09-08
highCVE-2026-69439: .NET and Visual Studio Elevation of Privilege Vulnerabilitymsrc · 2026-09-08