The CClient::ProcessServerPacket method in engine/client/client.cpp in Teeworlds before 0.6.4 allows remote servers to write to arbitrary physical memory locations and possibly execute arbitrary code via vectors involving snap handling.

Teeworlds before 0.7.4 has an integer overflow when computing a tilemap size.

In Teeworlds 0.7.2, there is an integer overflow in CMap::Load() in engine/shared/map.cpp that can lead to a buffer overflow, because multiplication of width and height is mishandled.

In Teeworlds 0.7.2, there is an integer overflow in CDataFileReader::Open() in engine/shared/datafile.cpp that can lead to a buffer overflow and possibly remote code execution, because size-related multiplications are mishandled.

In Teeworlds 0.7.2, there is a failed bounds check in CDataFileReader::GetData() and CDataFileReader::ReplaceData() and related functions in engine/shared/datafile.cpp that can lead to an arbitrary free and out-of-bounds pointer write, possibly resulting in remote code execution.

CServer::SendMsg in engine/server/server.cpp in Teeworlds 0.7.x before 0.7.5 allows remote attackers to shut down the server.

Teeworlds up to and including 0.7.5 is vulnerable to Buffer Overflow. A map parser does not validate mChannels value coming from a map file, leading to a buffer overflow. A malicious server may offer a specially crafted map that will overwrite client's stack causing denial of service or code execution.

In Teeworlds before 0.6.5, connection packets could be forged. There was no challenge-response involved in the connection build up. A remote attacker could send connection packets from a spoofed IP address and occupy all server slots, or even use them for a reflection attack using map download packets.

A memory leak in the component CConsole::Chain of Teeworlds v0.7.5 allows attackers to cause a Denial of Service (DoS) via opening a crafted file.

engine/server/server.cpp in Teeworlds 0.6.x before 0.6.3 allows remote attackers to read memory and cause a denial of service (crash) via unspecified vectors.

A heap use-after-free in the component CDataFileReader::GetItem of teeworlds v0.7.5 allows attackers to cause a Denial of Service (DoS) via a crafted map file.