CVE-2022-47949Public exploitNetwork attack vector

Remote code execution via unchecked NetworkBuffer copies

Published Dec 24, 2022 · Updated Apr 14, 2025

Buffer overflow in affected Nintendo games allows remote attackers to execute arbitrary code through crafted online-session UDP data. The NetworkBuffer Set and Add methods copy attacker-controlled data with memcpy without checking newDataSize against the destination dataSize, overwriting adjacent memory. An affected console must join an online game session with the attacker; demonstrated outcomes range from forced game exit to full console takeover.

CVSS severity9.8
Critical
EPSS probability22.26%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Buffer overflow in affected Nintendo games allows remote attackers to execute arbitrary code through crafted online-session UDP data. The NetworkBuffer Set and Add methods copy attacker-controlled data with memcpy without checking newDataSize against the destination dataSize, overwriting adjacent memory. An affected console must join an online game session with the attacker; demonstrated outcomes range from forced game exit to full console takeover.

The record

CVE
CVE-2022-47949
Published
Dec 24, 2022
Updated
Apr 14, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-120, T1203
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Dec 24, 2022CVE publishedPublication date reported by the CVE source.
  2. Apr 14, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

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

9.8MITRECVSS:3.1/AC:L/AV:N/A:H/C:H/I:H/PR:N/S:U/UI:N

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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

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 exploitPublished

Weakness, pattern, technique

CWE-120Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
T1203Exploitation for Client Execution

Public exploit references

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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