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CVE-2026-69530 is a use-after-free vulnerability in Microsoft’s Reliable Multicast Transport Driver (RMCAST). A network-based, unauthenticated attacker can trigger the memory-lifetime flaw to execute code remotely. The vulnerability is rated with CVSS v3.1 vector AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H.
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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.
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.
2 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A use-after-free vulnerability in the Reliable Multicast Transport Driver (RMCAST) that permits an unauthorized network-based attacker to execute code.
A network-reachable use-after-free vulnerability in the Reliable Multicast Transport Driver (RMCAST) that allows an unauthorized attacker to execute code remotely. The provided CVSS vector indicates no privileges or user interaction are required, but exploitation has high attack complexity; successful exploitation compromises confidentiality, integrity, and availability.
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.