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Fencer Vulns
high 7.5

CVE-2020-12066 json

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

published 2020-04-22 6 y ago modified 2026-06-17 4 mo ago also EUVD-2020-4382

cvss
7.5
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
3.0%
EPSS 3.0% chance of exploitation in 30 days, percentile 87%
public exploits
0
none known

Summary

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

Patch / fix

  • teeworlds teeworlds 0.7.5
  • teeworlds Debian 14, Debian 13, Debian 12 0.7.5-1

debian advisories DEBIAN-CVE-2020-12066

  • teeworlds Ubuntu 20.04 LTS 0.7.2-5ubuntu1.1

ubuntu advisories UBUNTU-CVE-2020-12066

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • teeworlds openSUSE Tumbleweed 0.7.5-2.9
  • teeworlds Package Hub 15 SP1 0.7.5-bp151.2.6.1
  • teeworlds openSUSE Leap 15.1 0.7.5-lp151.2.6.1

opensuse advisories openSUSE-SU-2024:11427-1openSUSE-SU-2020:0563-1openSUSE-SU-2020:0557-1

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2020-12066 updated cvss 7.5

teeworlds: allows an attacker force the server to repetitively shut down

  • Red Hat All currently supported Red Hat products
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

3.03% chance of exploitation in the next 30 days, higher than 87% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
NVD 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
NVD 2.0 7.8 AV:N/AC:L/Au:N/C:N/I:N/A:C

Classification

Weakness
  • CWE-20 Improper Input Validation

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.