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CVE-2025-53143 is a type confusion vulnerability in Windows Message Queuing. The flaw is described as access of a resource using an incompatible type and is reachable over the network by an authorized attacker. Available technical context indicates this issue belongs to a broader class of Windows RPC server vulnerabilities caused by insufficient constraints in IDL context-handle definitions and missing object-type validation in RPC interface handlers. In this pattern, a context handle or resource reference associated with one logical object type can be accepted by code that expects a different type, causing the server to operate on an incompatible object. Crash evidence places execution in the Message Queuing component during an RPC call path, consistent with unsafe use of an incorrectly typed object inside transaction-processing logic.
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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.
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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.
6 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.