A security issue has been reported in Epson LP-S7100 / LP-S9000 drivers, which can be exploited by malicious, local users to gain escalated privileges.
The security issue is caused due to insecure default permissions ("Everyone" group with "Full Control") being set on "C:\Program Files" and its sub-folders. This can be exploited to overwrite arbitrary files in these folders.
The security issue is reported in the following versions:
* LP-S7100 32bit edition versions 4.1.0fi through 4.1.7fi
* LP-S7100 64bit edition versions 4.1.0hi through 4.1.7hi
* LP-S9000 32bit edition versions 4.1.0fc through 4.1.11fc
* LP-S9000 64bit edition versions 4.1.0hc through 4.1.11hc
Solution: Update to a patched version and reset permissions. Please see the vendor's advisory for more details.
Provided and/or discovered by: Reported by the vendor.
Original Advisory: http://www.epson.jp/support/misc/lps7100_9000/index.htm
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