About ClamAV®

ClamAV is an open source (GPL) antivirus engine designed for detecting Trojans, viruses, malware and other malicious threats. It is the de facto standard for mail gateway scanning. It provides a high performance mutli-threaded scanning daemon, command line utilities for on demand file scanning, and an intelligent tool for automatic signature updates. The core ClamAV library provides numerous file format detection mechanisms, file unpacking support, archive support, and multiple signature languages for detecting threats. The core ClamAV library is utilized in Immunet 3.0, powered by ClamAV, which is a fast, fully featured Desktop AV solution for Windows.

Latest Stable Release

Latest ClamAV® stable release is: 0.98.1
Windows Antivirus - Immunet 3.0, powered by ClamAV (Learn more) Download now
ClamAV Virus Databases:
main.cvd ver. 55 released on 17 Sep 2013 10:57 :0400 (sig count: 2424225)
daily.cvd ver. 18826 released on 19 Apr 2014 04:45 :0400 (sig count: 897772)
bytecode.cvd ver. 236 released on 05 Feb 2014 12:36 :0500 (sig count: 43)
safebrowsing.cvd ver. 41819 released on 19 Apr 2014 03:00 :0400 (sig count: 1112600)

Latest Development Release (Release Candidates)

There are no Release Candidates currently planned.


ClamAV 0.95 Engine End of Life Announcement

March 28th, 2014 Posted by -

ClamAV Community,

This notice is to inform you that effective immediately ClamAV 0.95 (and all minor versions) is no longer supported in accordance with ClamAV’s EOL policy which can be found here:


While the current CVD’s being distributed will still work on ClamAV 0.95, and we are not enabling the functionality to actually make those versions be able to update, this does serve as notice that we are no longer going to be testing against that version in our regression tests.

We will also be EOL’ing 0.96 in coming months, so if either of those versions is currently in use, it is highly suggested that you upgrade to the most current version.

Thank you for using ClamAV!

Open Source Community Webinar

March 8th, 2014 Posted by -

ClamAV community,

First off, we’d like to thank everyone for their continued use of our projects and products here at Sourcefire, now a part of Cisco.  We love making great software, and we love for you to use it and contribute back.  It’s been a great transition so far into the Cisco community, and recently, we held an Open Source Community Meeting at RSA, and we’d like to provide the content out to our Open Source user (Read more...)

Programmatic Boolean Simplification and ClamAV Signatures

March 6th, 2014 Posted by -

Introducing OpenSSL as a dependency to ClamAV

February 22nd, 2014 Posted by -

In an upcoming release, we are planning on introducing OpenSSL as a dependency to ClamAV.  We wanted to get this out to the community for any feedback that could be provided in order for everyone to understand why we are doing it.  So first, I’ll cover a few reasons we are planning to introduce it, then outline some Pros and Cons:

  1. Performance. OpenSSL has code optimized for many platforms. In several tests that we’ve performed, we’ve averaged (Read more...)

Open Source Community Meeting next week at RSA!

February 20th, 2014 Posted by -

After a lot of hard work by our teams, and with RSA just a few days away, we are proud to announce that along with Cisco and Sourcefire’s corporate teams being present at RSA, and for the first time we will also be holding an Open Source Community Meeting!

Matt Watchinski (Director of the Vulnerability Research Team) and myself, Joel Esler, (Open Source Manager) will be presenting on the state of our Open Source projects at Sourcefire, (Read more...)