Bitcoin Core disclosed CVE-2025-62859 on 10 November 2026, a medium-severity flaw in versions before 29.2 and 30.0 that a malicious node could use to stall a victim's block processing. Fixes are in 29.2 and 30.0.
Bitcoin Core discloses medium-severity bug that can stall block processing
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The story so far: Bitcoin Core CVE-2025-62859 disclosure
Bitcoin Core disclosed CVE-2025-62859 on 10 November 2026, a medium-severity flaw in versions before 29.2 and 30.0 that lets a malicious node stall block processing. It has now also disclosed three other previously patched flaws, including a high-severity issue that could have stopped mining nodes producing block…
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Bitcoin Core discloses medium-severity bug that can stall block processing
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