CVE-2016-9400

The CClient::ProcessServerPacket method in engine/client/client.cpp in Teeworlds before 0.6.4...

9.8 CriticalFix available

CVE-2016-9400 is a critical vulnerability (CVSS 9.8) in Teeworlds, published November 30, 2016. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 3.65%, the 89th percentile. Fixed in teeworlds 0.6.4+dfsg-1.

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.

Attack profile

How easy it is to exploit

Attack vector: Network
Complexity: Low
Privileges needed: None
User interaction: None

What an attacker can affect

Confidentiality: High
Integrity: High
Availability: High

Exploit likelihood

3.65%Up 0.8 points since Feb 4, 2022

What each source reports

NVD Score used 9.8

Record: CVE-2016-9400
CVSS 3.1: 9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS 2.0: 7.5 HighAV:N/AC:L/Au:N/C:P/I:P/A:P
Weakness: CWE-119
Updated: 2026-11-02

CVE List No score

Record: CVE-2016-9400
Updated: 2026-11-02

EUVDEUVD-2016-10210 No score

Record: EUVD-2016-10210
Updated: 2026-11-03

GitHub AdvisoriesGHSA-jv4p-f6mv-66w4 9.8

The CClient::ProcessServerPacket method in engine/client/client.cpp in Teeworlds before 0.6.4...

Record: GHSA-jv4p-f6mv-66w4
CVSS 3.1: 9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness: CWE-119
Updated: 2026-11-02

OSV 9.8

Record: CVE-2016-9400
CVSS 3.1: 9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Updated: 2026-11-02

OSVDEBIAN-CVE-2016-9400 9.8

Record: DEBIAN-CVE-2016-9400
CVSS 3.1: 9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Updated: 2026-11-02

OSVUBUNTU-CVE-2016-9400 9.8

Record: UBUNTU-CVE-2016-9400
CVSS 3.1: 9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Updated: 2026-11-02

OSVMGASA-2016-0407 No score

Updated teeworlds package fixes security vulnerability

A security vulnerability was found in the Teeworlds client logic that could enable remote code execution on the client by malicious servers (CVE-2016-9400). This maintenance release fixes it.

Record: MGASA-2016-0407
Updated: 2026-11-02

Affected products

Affected packages

Affected packages
Package	Affected	Fixed
`teeworlds` Debian:12	before 0.6.4+dfsg-1	0.6.4+dfsg-1
`teeworlds` Debian:13	before 0.6.4+dfsg-1	0.6.4+dfsg-1
`teeworlds` Debian:14	before 0.6.4+dfsg-1	0.6.4+dfsg-1
`teeworlds` Mageia:5	before 0.6.4-1.mga5	0.6.4-1.mga5
`teeworlds` Ubuntu:16.04:LTS	All versions, plus listed versions 0.6.2+dfsg-2	None known

History

History
When	Changed	Sources
2026-11-03	aliases	EUVD
2026-11-02	created	CVE List, GitHub Advisories, NVD, OSV

References

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