What’s Vulnerable › Vulnerabilities

CVE-2016-9400

• Severity: critical (CVSS 9.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 3.6% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2017-02-22 · updated 2026-06-17
• Weakness: CWE-119

Description

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.

Affected products

• Fedoraproject Fedora: 23
• Teeworlds: before 0.6.4 — fixed in 0.6.4

How to fix

Upgrade to a fixed version: Teeworlds 0.6.4. Check the vendor advisory for mitigations.

References

• http://www.openwall.com/lists/oss-security/2016/11/16/8
• http://www.openwall.com/lists/oss-security/2016/11/17/8
• http://www.securityfocus.com/bid/94381
• https://github.com/teeworlds/teeworlds/commit/ff254722a2683867fcb3e67569ffd36226c4bc62
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/C4JNSBXXPE7O32ZMFK7D7YL6EKLG7PRV/
• https://security.gentoo.org/glsa/201705-13
• https://www.teeworlds.com/?page=news&id=12086
• http://www.openwall.com/lists/oss-security/2016/11/16/8
• http://www.openwall.com/lists/oss-security/2016/11/17/8
• http://www.securityfocus.com/bid/94381
• https://github.com/teeworlds/teeworlds/commit/ff254722a2683867fcb3e67569ffd36226c4bc62
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/C4JNSBXXPE7O32ZMFK7D7YL6EKLG7PRV/

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