  We present a collection of WISE photometry of EXor sources and candidates
(more recently identified). This represents the first complete survey of such
objects in the mid-IR (3.4 - 22 um) that was carried out with the same
instrumentation. Two-color diagrams constructed with WISE data evidence a clear
segregation between classical and newly identified sources, being these latter
characterized by colder (and less evolved) circumstellar disks. By combining
2MASS and WISE data, we obtain spectral energy distributions (SED's) that are
compatible with the existence of an inner hole in the circumstellar disk. A
compilation of all EXor observations given in the literature at wavelengths
very similar to those of WISE is also provided. This allows us to study their
mid-IR variability, which has been poorly investigated so far and without any
coordination with shorter wavelengths surveys. The presented it WISE photometry
and the compilation of the literature data are intended as a first step toward
the construction of a significant database in this spectral regime. Preliminary
indications on the mechanisms responsible for the luminosity fluctuations are
provided.
