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CVE-2026-32226 is a denial-of-service vulnerability in Microsoft .NET Framework caused by concurrent execution using a shared resource with improper synchronization, i.e., a race condition. The provided content identifies the flaw class explicitly and states that it is reachable over the network by an unauthorized attacker. Microsoft lists this issue as affecting .NET Framework, including update coverage for .NET Framework 3.5 and 4.8.1 on Microsoft server operating system version 23H2.
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What it means. What to do now. Patch path, mitigations, and the assume-compromise checklist.
What an attacker gets, and what they’ve been doing with it.
If you can’t patch tonight, do this now.
Patch, then assume compromise.
No public exploits tracked yet. Mallory keeps watching.
No public exploit code observed for this vulnerability.
Products and vendors Mallory has correlated with this vulnerability. Open in Mallory to drill down to specific CPE configurations and version ranges.
Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
3 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
.NET Framework のサービス拒否脆弱性。既存 CVE に対して .NET Framework 向けセキュリティアップデートが追記された。
A denial-of-service vulnerability in .NET Framework addressed by the April 14, 2026 Microsoft security update for server operating system version 23H2.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.