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CVE-2026-54542 is an out-of-bounds access flaw in the nimiq-primitives component used by core-rs-albatross. The issue occurs in the KeyNibbles::Add logic during key-nibble concatenation, where insufficient bounds checking can cause an out-of-bounds slice operation on crafted deserialized proof data. A malicious state-sync peer can supply specially crafted state-sync data that triggers the panic before proof verification completes, causing the target node to terminate unexpectedly during synchronization.
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What an attacker gets, and what they’ve been doing with it.
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Patch, then assume compromise.
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No public exploit code observed for this vulnerability.
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No public activity observed for this vulnerability.
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Cross-references every affected SKU, including bundled OEM variants.
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