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CVE-2020-12066

CServer::SendMsg in engine/server/server.cpp in Teeworlds 0.7.x before 0.7.5 allows remote...

7.5 HighFix available

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

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
None
Integrity
None
Availability
High

Exploit likelihood

3.03%Up 1.0 points since Apr 14, 2021
90%50%10%1%

What each source reports

NVD Score used 7.5

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

Record
CVE-2020-12066
CVSS 3.1
7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS 2.0
7.8 HighAV:N/AC:L/Au:N/C:N/I:N/A:C
Weakness
CWE-20
Updated
2026-11-02
CVE List No score

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

Record
CVE-2020-12066
Updated
2026-11-02
EUVDEUVD-2020-4382 No score

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

Record
EUVD-2020-4382
Updated
2026-11-03
GitHub AdvisoriesGHSA-733m-275p-p27q 7.5

CServer::SendMsg in engine/server/server.cpp in Teeworlds 0.7.x before 0.7.5 allows remote...

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

Record
GHSA-733m-275p-p27q
CVSS 3.1
7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness
CWE-20, CWE-400
Updated
2026-11-02
OSV 7.5

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

Record
CVE-2020-12066
CVSS 3.1
7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Updated
2026-11-02
OSVDEBIAN-CVE-2020-12066 7.5

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

Record
DEBIAN-CVE-2020-12066
CVSS 3.1
7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Updated
2026-11-02
Show 6 moreShow less
OSVUBUNTU-CVE-2020-12066 7.5

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

Record
UBUNTU-CVE-2020-12066
CVSS 3.1
7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Updated
2026-11-02
OSVMGASA-2020-0191 No score

Updated teeworlds packages fix security vulnerabilities

Updated teeworlds packages fix security vulnerabilities

Teeworlds before 0.7.4 is subject to an integer overflow when computing a tilemap size (CVE-2019-20787).

Teeworlds before 0.7.5 is subject to a denial of service against the server (CVE-2020-12066).

This update fixes both vulnerabilities by updating from Teeworlds 0.7.3.1 to 0.7.5, including additional features and bug fixes (see the referenced changelogs for details).

Record
MGASA-2020-0191
Updated
2026-11-02
OSVopenSUSE-SU-2020:0557-1 No score

Security update for teeworlds

This update for teeworlds to version 0.7.5 fixes the following issues:

Security issues fixed:

  • CVE-2020-12066: Fixed a denial of service against the server (boo#1170252)
  • CVE-2019-20787: Fixed an integer overflow when computing a tilemap size (boo#1170253)

Non-security issues fixed:

  • multiple smaller bug fixes and improvements.
Record
openSUSE-SU-2020:0557-1
Updated
2026-11-02
OSVopenSUSE-SU-2020:0563-1 No score

Security update for teeworlds

This update for teeworlds to version 0.7.5 fixes the following issues:

Security issues fixed:

  • CVE-2020-12066: Fixed a denial of service against the server (boo#1170252)
  • CVE-2019-20787: Fixed an integer overflow when computing a tilemap size (boo#1170253)

Non-security issues fixed:

  • multiple smaller bug fixes and improvements.

This update was imported from the openSUSE:Leap:15.1:Update update project.

Record
openSUSE-SU-2020:0563-1
Updated
2026-11-02
OSVopenSUSE-SU-2024:11427-1 No score

teeworlds-0.7.5-2.9 on GA media

These are all security issues fixed in the teeworlds-0.7.5-2.9 package on the GA media of openSUSE Tumbleweed.

Record
openSUSE-SU-2024:11427-1
Updated
2026-11-02
OSVUSN-4553-1 No score

teeworlds vulnerability

It was discovered that Teeworlds server did not properly handler certain network traffic. A remote, unauthenticated attacker could use this vulnerability to cause Teeworlds server to crash.

Record
USN-4553-1
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
teeworlds
Debian:12
 before 0.7.5-1
0.7.5-1
teeworlds
Debian:13
 before 0.7.5-1
0.7.5-1
teeworlds
Debian:14
 before 0.7.5-1
0.7.5-1
teeworlds
Debian:10
 before 0.7.2-5+deb10u1, plus listed versions
0.7.2-5
0.7.2-5+deb10u1
teeworlds
Mageia:7
From an advisory covering 2 CVEs
 before 0.7.5-1.mga7
0.7.5-1.mga7
teeworlds
Ubuntu:16.04:LTS
 All versions, plus listed versions
0.6.2+dfsg-2
 None known
teeworlds
Ubuntu:18.04:LTS
 All versions, plus listed versions
0.6.4+dfsg-1
 None known
teeworlds
Ubuntu:20.04:LTS
 before 0.7.2-5ubuntu1.1, plus listed versions
0.7.2-50.7.2-5ubuntu1
0.7.2-5ubuntu1.1
teeworlds
openSUSE:Leap 15.1
From an advisory covering 2 CVEs
 before 0.7.5-lp151.2.6.1
0.7.5-lp151.2.6.1
teeworlds
SUSE:Package Hub 15 SP1
From an advisory covering 2 CVEs
 before 0.7.5-bp151.2.6.1
0.7.5-bp151.2.6.1
teeworlds
openSUSE:Tumbleweed
From an advisory covering 3 CVEs
 before 0.7.5-2.9
0.7.5-2.9

History

History
RecordedChangedSources
affected, facts
aliasesEUVD
first indexedCVE List, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2020-12066 is a high vulnerability (CVSS 7.5) in Teeworlds, published April 22, 2020. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 3.03%, the 87th percentile. Fixed in teeworlds 0.7.5-1.

References

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