EMC has issued security patches for its data backup software, while exploit code targeting an earlier hole in rival Symantec's backup software has been released on the Net.

EMC has issued patches for three versions of its Networker software which fix problems that could lead to a system crash or unauthorised remote access. Meanwhile, exploit code targeting Veritas' Netbackup product appeared on Monday. The flaw was first discovered in November by iDefense and a patch subsequently issued.

A buffer overflow in a shared library affects 5.x versions of servers and clients. If successful, an exploit could allow a hacker to deny service or execute arbitrary code.