CVE-2026-62902: .NET Information Disclosure Vulnerability

mediumCVSS 6.5CVE-2026-62902

Inclusion of functionality from untrusted control sphere in .NET allows an unauthorized attacker to disclose information over a network.

CSIRTS triage

vendor: Microsoft product: .NET Information disclosure

What: Inclusion of functionality from untrusted control sphere in .NET allows information disclosure.
Who is affected: Applications using .NET that handle untrusted input or components.
Urgency: Medium severity (CVSS 6.5); not exploited but information leakage risk warrants prompt patching.
Action: Apply the latest .NET security update from Microsoft.

AI-assisted analysis generated from the source advisory — verify against the original.

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Details

Source: Microsoft Security Response Center (INTL · vendor-psirt · site)
Severity: medium — CVSS 6.5
Published: 2026-08-11
Exploitation: Not in CISA KEV at last sync

Original advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-62902

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.

Low exploitation riskCVE-2026-629020.76% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 52% of all EPSS-scored CVEs.

Referenced CVEs

CVE	CSIRTS overview	External
CVE-2026-62902	coverage & exploitation status	NVD · CVE.org

Same CVEs, other sources

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

high[NEW] [high] Microsoft Developer Tools: Multiple Vulnerabilitiescert-bund
unknownMultiple vulnerabilities in Microsoft .Net (August 12, 2026)cert-fr-avis
unknownMultiple vulnerabilities in Microsoft products (August 12, 2026)cert-fr-avis
mediumGHSA-9mrh-pw7c-9mqm: Microsoft Security Advisory CVE-2026-62902 – .NET Information Disclosure Vulnerabilityghsa
unknownNCSC-2026-0285 [1.00] [M/H] Vulnerabilities patched in Microsoft Developer Toolsncsc-nl
mediumCVE-2026-62902: Inclusion of functionality from untrusted control sphere in .NET allows an unauthorized attack…nvd

Recent advisories for .NET Information Disclosure

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.

mediumGHSA-9mrh-pw7c-9mqm: Microsoft Security Advisory CVE-2026-62902 – .NET Information Disclosure Vulnerabilityghsa · 2026-08-11
highGHSA-c494-m2fq-59mx: Microsoft Security Advisory CVE-2026-62898 – .NET Information Disclosure Vulnerabilityghsa · 2026-08-11
mediumCVE-2026-62900: .NET Information Disclosure Vulnerabilitymsrc · 2026-08-11
criticalexploitedCVE-2024-29059: Microsoft .NET Framework Information Disclosure Vulnerabilitycisa-kev · 2025-02-04