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CVE-2026-62909 is an elevation of privilege vulnerability in .NET attributed to an uncaught exception or unchecked return value condition in diagnostics IPC handling. Available reporting indicates the flaw stems from a missing error check that can cause an improper access control list to be applied to a shared resource. On affected .NET runtime packages, a local authorized attacker can exploit this condition to obtain privileges beyond those originally granted. The issue has been described as affecting Linux and macOS .NET runtime packages and is associated with .NET 8, .NET 9, and .NET 10 runtime lines prior to the patched releases.
Mallory correlates every CVE against your assets, your vendors, and active adversary campaigns. Know which vulnerabilities matter for you, not just which ones are loud.
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.
9 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
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.