CVE-2025-12501Network attack vector

Remote application crashes via packet-processing integer overflow

Published Oct 31, 2025 · Updated Oct 31, 2025

Integer overflow in GameMaker runtime before 2024.14.0 allows remote attackers to crash networked games with crafted packets. The packet-processing path used by network_create_server() mishandles malformed or oversized packets, triggering an integer overflow that terminates the application. Exposure requires a project compiled with an affected runtime to use that function as a reachable network server; successful attacks interrupt that game or application only.

CVSS severity7.5
High
EPSS probability0.47%
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 GameMaker runtime before 2024.14.0 allows remote attackers to crash networked games with crafted packets. The packet-processing path used by network_create_server() mishandles malformed or oversized packets, triggering an integer overflow that terminates the application. Exposure requires a project compiled with an affected runtime to use that function as a reachable network server; successful attacks interrupt that game or application only.

The record

CVE
CVE-2025-12501
Published
Oct 31, 2025
Updated
Oct 31, 2025
Vendor
Opera
Product
GameMaker
Classifications
CWE-190, T1499.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Oct 31, 2025CVE publishedPublication date reported by the CVE source.
  2. Oct 31, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=Below 2024.14.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Opera · GameMakerversion=Below 2024.14.0

Published CVSS scores

7.5CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

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
T1499.004Endpoint Denial of Service: Application or System Exploitation

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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