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CVE Record

CVE-2019-20893: An issue was discovered in Activision Infinity Ward Call of Duty Modern Warfare 2 through 2019-12-11.

An issue was discovered in Activision Infinity Ward Call of Duty Modern Warfare 2 through 2019-12-11. PartyHost_HandleJoinPartyRequest has a buffer overflow vulnerability and can be exploited by using a crafted joinParty packet. This can be utilized to conduct arbitrary code execution on a victim's machine.

UnknownCVSS not scoredNot KEV-listedUpdated
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Glexia's TakeAutomated analysishigh

Security readout for executives and security teams

Plain-English summary

CVE-2019-20893 is a reported remote code execution issue in Activision Infinity Ward Call of Duty Modern Warfare 2 through 2019-12-11. A malicious party-join request could overflow memory and potentially run code on a victim machine. The provided sources do not include CVSS, affected platform detail, or vendor remediation guidance.

Executive priority

Treat this as high priority for environments where the game is present on business-connected systems. The business risk is endpoint compromise, but urgency depends on actual installations and network access. Evidence is sparse, so start with inventory and containment.

Technical view

The CVE describes a buffer overflow in PartyHost_HandleJoinPartyRequest, reachable via a crafted joinParty packet. Successful exploitation may allow arbitrary code execution on the victim's machine. The record lacks CWE, CVSS, precise version ranges beyond the date, and official fix information in the provided bundle.

Likely exposure

Exposure is likely limited to systems running the affected Call of Duty Modern Warfare 2 client through 2019-12-11 and using party/join functionality. Enterprise exposure is most relevant where gaming clients exist on managed, BYOD, lab, or shared-use endpoints.

Exploitation context

The CVE states exploitation is possible with a crafted joinParty packet, and the reference points to a public GitHub repository. The provided sources do not show CISA KEV listing or confirmed active exploitation in the wild.

Researcher notes

The public record is thin: no CVSS, CWE, official affected CPEs, or named patch. Research should focus on confirming build exposure, platform scope, and whether vendor-side or client-side updates addressed the vulnerable party request handler.

Mitigation direction

  • Check Activision or platform guidance for updates or fixes.
  • Remove or restrict affected game clients from managed endpoints.
  • Avoid joining parties from untrusted users or communities.
  • Isolate gaming systems from sensitive business networks.
  • Monitor endpoints for crashes or suspicious process behavior.

Validation and detection

  • Inventory endpoints for Call of Duty Modern Warfare 2 installations.
  • Confirm whether installed builds are from through 2019-12-11.
  • Review vendor and platform update history for remediation details.
  • Check EDR logs for unusual crashes or child processes.
  • Document remaining systems where party features are usable.
Prepared
Confidence
medium
Sources
3

Public sources used

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

Conservative CVE-to-ATT&CK context

These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.

ATT&CK lookup starting points

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description · low confidence lookup

Execution behavior lookup

The CVE wording references code or command execution, so execution technique review may help defensive triage. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.

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cve · low confidence lookup

CVE-2019-20893 mapping review

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Vulnerability profileCVE Program record
Severity
Unknown
CVSS
Not scored
Known Exploited
No
Published
Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

0CVSS vectors
0Timeline events
0ADP providers
2Source links

CVSS and timeline data

No CVSS vectors or timeline events were available in the normalized CVE source material.

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
n/an/an/aListed
Weakness

CWE details

No CWE listed

CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.