Server Killing Floor Dedicated bug

[sysvm]

This player be spectator when he use exploit.

Open myLevel Sat May 13 19:11:04 2017 93.89.220.79:52798
New Player stepan id=76561198075126617
Open myLevel Sat May 13 19:13:11 2017 93.89.220.79:52802
Open myLevel Sat May 13 19:13:14 2017 93.89.220.79:52803
New Player Fresh Meat id=0
Open myLevel Sat May 13 19:13:16 2017 93.89.220.79:52804
New Player Fresh Meat id=0
Open myLevel Sat May 13 19:13:17 2017 93.89.220.79:52805
New Player Fresh Meat id=0
Open myLevel Sat May 13 19:13:18 2017 93.89.220.79:52806
Login failed: Server is already at capacity.
Close TcpipConnection 93.89.220.79:52806 Sat May 13 19:13:18 2017

After

Developer Backtrace:
[ 1] ./ucc-bin-real() [0x847d7cc]
[ 2] [0xf76f5bc0]
[ 3] ./ucc-bin-real() [0x8454ac3]
[ 4] ./ucc-bin-real() [0x8454ae7]
[ 5] ./ucc-bin-real() [0x8454ae7]
[ 6] ./ucc-bin-real() [0x8454be1]
[ 7] ./ucc-bin-real() [0x8465bc5]
[ 8] ./ucc-bin-real() [0x8465f4e]
[ 9] ./ucc-bin-real() [0x813a215]
[10] ./ucc-bin-real() [0x812dce7]
[11] ./ucc-bin-real() [0x81443e4]
[12] ./ucc-bin-real() [0x8116f17]
[13] ./ucc-bin-real() [0x804d76b]
[14] /lib/i386-linux-gnu/libc.so.6(__libc_start_main+0xf7) [0xf73e3637]
[15] ./ucc-bin-real() [0x804b631]
Unreal Call Stack: UObject::GetPathName <- UObject::GetPathName <- UObject::GetPathName <- UObject::GetFullName <- DispatchDestroy <- DispatchDestroys <- UObject:urgeGarbage <- UObject::CollectGarbage <- Cleanup <- UGameEngine::LoadMap <- LocalMapURL <- UGameEngine::Browse <- ServerTravel <- UGameEngine::Tick <- UpdateWorld <- UServerCommandlet::Main
Exiting.

maybe its fix
UT Security Patch 440