Dash Core 0.12.3.3 is a critical bugfix release of the Dash Core 0.12.3.x series. There was a serious vulnerability discovered in Bitcoin Core's codebase recently which can cause node receiving a specially crafted block to crash https://github.com/bitcoin/bitcoin/pull/14247 We encourage all full node operators (masternodes, mining pools, explorers, exchanges etc.) to update ASAP. Full release notes are available at https://github.com/dashpay/dash/blob/v0.12.3.3/doc/release-notes.md, release binaries can be downloaded from https://github.com/dashpay/dash/releases/tag/v0.12.3.3. Note: this release does NOT require masternode owners to start their masternodes from cold wallets. Masternode operators should stop the daemon running on a remote node, replace old binaries with the new ones and start the daemon again.