CVE-2021-32238Public exploit

Code execution via oversized UPK byte array

Published May 18, 2021 · Updated Aug 3, 2024

Stack-based buffer overflow in Rocket League 1.95 and earlier allows attackers to execute code through a crafted UPK file. The UPK parser fails to bound a large byte array placed near the file's magic header, overrunning the stack in AK::MemoryMgr::GetPoolName. The published scenario requires user interaction and administrator-level payload placement in CookedPCConsole; the demonstrated artifact crashes the game, while weaponized code execution was not shown.

CVSS severity7.8
High
EPSS probability2.08%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stack-based buffer overflow in Rocket League 1.95 and earlier allows attackers to execute code through a crafted UPK file. The UPK parser fails to bound a large byte array placed near the file's magic header, overrunning the stack in AK::MemoryMgr::GetPoolName. The published scenario requires user interaction and administrator-level payload placement in CookedPCConsole; the demonstrated artifact crashes the game, while weaponized code execution was not shown.

The record

CVE
CVE-2021-32238
Published
May 18, 2021
Updated
Aug 3, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-787, T1204.002, T1203
Attack vector
local
Privileges
admin

Timeline

How it unfolded

  1. May 18, 2021CVE publishedPublication date reported by the CVE source.
  2. Aug 3, 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 vectorlocal
Required privilegesadmin

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

7.8NIST NVDCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
9.3NIST NVDAV:N/AC:M/Au:N/C:C/I:C/A:C

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)
Vectorlocal
Privilegesadmin
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-787Out-of-bounds Write
T1204.002Malicious File
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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