diff --git a/lib/core/settings.py b/lib/core/settings.py
index 93668991d..b336ec671 100644
--- a/lib/core/settings.py
+++ b/lib/core/settings.py
@@ -18,7 +18,7 @@ from lib.core.enums import OS
 from thirdparty.six import unichr as _unichr
 
 # sqlmap version (<major>.<minor>.<month>.<monthly commit>)
-VERSION = "1.3.6.57"
+VERSION = "1.3.6.58"
 TYPE = "dev" if VERSION.count('.') > 2 and VERSION.split('.')[-1] != '0' else "stable"
 TYPE_COLORS = {"dev": 33, "stable": 90, "pip": 34}
 VERSION_STRING = "sqlmap/%s#%s" % ('.'.join(VERSION.split('.')[:-1]) if VERSION.count('.') > 2 and VERSION.split('.')[-1] == '0' else VERSION, TYPE)
diff --git a/lib/utils/brute.py b/lib/utils/brute.py
index 14023c9a8..b44ab6b94 100644
--- a/lib/utils/brute.py
+++ b/lib/utils/brute.py
@@ -18,6 +18,7 @@ from lib.core.common import getFileItems
 from lib.core.common import getPageWordSet
 from lib.core.common import hashDBWrite
 from lib.core.common import isNoneValue
+from lib.core.common import ntToPosixSlashes
 from lib.core.common import popValue
 from lib.core.common import pushValue
 from lib.core.common import randomInt
@@ -298,6 +299,19 @@ def columnExists(columnFile, regex=None):
 @stackedmethod
 def fileExists(pathFile):
     retVal = []
+
+    message = "which common files file do you want to use?\n"
+    message += "[1] default '%s' (press Enter)\n" % pathFile
+    message += "[2] custom"
+    choice = readInput(message, default='1')
+
+    if choice == '2':
+        message = "what's the custom common files file location?\n"
+        pathFile = readInput(message) or pathFile
+
+    infoMsg = "checking files existence using items from '%s'" % pathFile
+    logger.info(infoMsg)
+
     paths = getFileItems(pathFile, unique=True)
 
     kb.bruteMode = True
@@ -321,7 +335,7 @@ def fileExists(pathFile):
         while kb.threadContinue:
             kb.locks.count.acquire()
             if threadData.shared.count < threadData.shared.limit:
-                path = paths[threadData.shared.count]
+                path = ntToPosixSlashes(paths[threadData.shared.count])
                 threadData.shared.count += 1
                 kb.locks.count.release()
             else:
diff --git a/plugins/dbms/mssqlserver/filesystem.py b/plugins/dbms/mssqlserver/filesystem.py
index 72133f27c..640b1ddf7 100644
--- a/plugins/dbms/mssqlserver/filesystem.py
+++ b/plugins/dbms/mssqlserver/filesystem.py
@@ -89,7 +89,7 @@ class Filesystem(GenericFilesystem):
 
         result = []
         txtTbl = self.fileTblName
-        hexTbl = "%shex" % self.fileTblName
+        hexTbl = "%s%shex" % (self.fileTblName, randomStr())
 
         self.createSupportTbl(txtTbl, self.tblField, "text")
         inject.goStacked("DROP TABLE %s" % hexTbl)