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CVE-2025-49090 affects the Matrix specification before version 1.16. According to the provided content, Matrix deployments using a room version before 12 and State Resolution before 2.1 are affected by deficient state resolution. This indicates a flaw in how Matrix resolves conflicting room state across events/servers under older room-version and state-resolution rules. The provided material does not include function-level or implementation-level details beyond identifying the issue as deficient state resolution in the specification.
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No public exploit code observed for this vulnerability.
7 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
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Every observed campaign linking this CVE to a named adversary.
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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.