"The bug in the GnuTLS library makes it trivial for attackers to bypass secure sockets layer (SSL) and Transport Layer Security (TLS) protections available on websites that depend on the open source package. Initial estimates included in Internet discussions such as this one indicate that more than 200 different operating systems or applications rely on GnuTLS to implement crucial SSL and TLS operations, but it wouldn't be surprising if the actual number is much higher."
Do we know what the risks to Sophos-protected networks are?
This article explains it fairly well.
Critical crypto bug leaves Linux, hundreds of apps open to eavesdropping | Ars Technica
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