Disclosure of CVE-2020-14198

Nodes could be subject to CPU and memory DoS when attacked by lots of distinct IPs. A fix was released on August 1st, 2020 in Bitcoin Core 0.20.1.

Disclosure of CVE-2015-3641

Attackers sending large incomplete messages would cause high memory usage. A fix was released on April 27th, 2015 in Bitcoin Core 0.10.1.






Disclosure of CVE-2017-18350

Nodes were potentially vulnerable to a buffer overflow by malicious SOCKS servers. A fix was released on November 6th, 2017 in Bitcoin Core version 0.15.1.


Bitcoin Core 0.17.0 Released

We’re pleased to announce the release of Bitcoin Core 0.17, a major new version containing many new features as well as bug fixes and other improvements.

Disclosure of CVE-2018-17144

Bitcoin Core was vulnerable to a DoS and inflation attack. A fix was released on September 18th, 2018 in Bitcoin Core versions 0.16.3 and 0.17.0rc4.

Bitcoin Core 0.16.3 Released

Bitcoin Core 0.16.3 is now available with a fix for a denial-of-service vulnerability affecting earlier versions of Bitcoin Core.



Segregated Witness Upgrade Guide

Almost two years of iterative design, development, and testing has gone into the version of segwit being released in Bitcoin Core 0.13.1, with much of the ef...

Segregated witness: the next steps

Segregated witness (segwit) is approaching release. This post provides some background information, details about how segwit was tested, information about h...

Version bits FAQ for miners

The “version bits” BIP9 system is a way to introduce backward compatible rule changes to the Bitcoin consensus rules, known as a soft fork.

Compact Blocks FAQ

Compact block relay, BIP152, is a method of reducing the amount of bandwidth used to propagate new blocks to full nodes.

Bitcoin Core 0.12.1 Released!

We are pleased to announce the release of Bitcoin Core 0.12.1. This maintenance update includes the first soft fork deployment utilising version bits

Keep updated!

In an effort to increase communications, we are now providing opt-in, announcement-only information for users of Bitcoin Core to receive notifications of sec...

Bitcoin Core 0.12.0 Released!

We’re very excited to announce the official release of Bitcoin Core v0.12.0. A lot of hard work has gone into this release and it may just be the biggest one...

Clarifying Communications

Where to find official information about Bitcoin Core and how you can interact with other Bitcoin Core users and developers.

Statement from Bitcoin Core -- 2016-01-07

Bitcoin is a “peer-to-peer version of electronic cash that allows online payments to be sent directly from one party to another without going through a finan...