CVE-2019-20787Network attack vector

Unspecified impact via tilemap size overflow

Published Apr 22, 2020 · Updated Aug 5, 2024

Integer overflow in Teeworlds before 0.7.4 allows remote attackers to cause an unspecified impact via network input. The tilemap-size calculation permits its integer result to wrap, but public upstream material does not identify the responsible function or downstream memory operation. Unauthenticated network reachability is sufficient; published sources do not establish whether the wrapped size causes a crash, memory corruption, or code execution.

CVSS severity9.8
Critical
EPSS probability1.51%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Integer overflow in Teeworlds before 0.7.4 allows remote attackers to cause an unspecified impact via network input. The tilemap-size calculation permits its integer result to wrap, but public upstream material does not identify the responsible function or downstream memory operation. Unauthenticated network reachability is sufficient; published sources do not establish whether the wrapped size causes a crash, memory corruption, or code execution.

The record

CVE
CVE-2019-20787
Published
Apr 22, 2020
Updated
Aug 5, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Apr 22, 2020CVE publishedPublication date reported by the CVE source.
  2. Aug 5, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

9.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
7.5NIST NVDAV:N/AC:L/Au:N/C:P/I:P/A:P

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-190Integer Overflow or Wraparound

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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