CVE-2024-0033

Local privilege escalation via unsealed shared memory

Published Feb 16, 2024 · Updated Aug 16, 2024

Heap buffer overflow in Google Android 11, 12, 12L, 13, and 14 allows local users to escalate privileges through shared memory. The affected ashmem-dev.cpp and MemoryHeapBase paths omit a file-size seal for memfd-backed regions, allowing an untrusted process to shrink a buffer after another process maps it. Exploitation requires local code execution but no additional execution privileges or user interaction; success grants higher privileges, while the underlying operation can also crash the mapping process.

CVSS severity8.4
High
EPSS probability0.16%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Heap buffer overflow in Google Android 11, 12, 12L, 13, and 14 allows local users to escalate privileges through shared memory. The affected ashmem-dev.cpp and MemoryHeapBase paths omit a file-size seal for memfd-backed regions, allowing an untrusted process to shrink a buffer after another process maps it. Exploitation requires local code execution but no additional execution privileges or user interaction; success grants higher privileges, while the underlying operation can also crash the mapping process.

The record

CVE
CVE-2024-0033
Published
Feb 16, 2024
Updated
Aug 16, 2024
Vendor
Google
Product
Android
Classifications
CWE-122, T1404
Attack vector
local
Privileges
Unavailable

Timeline

How it unfolded

  1. Feb 16, 2024CVE publishedPublication date reported by the CVE source.
  2. Aug 16, 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?

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

  1. Affected versionversion=11
  2. Affected versionversion=11.0
  3. Affected versionversion=12
  4. Affected versionversion=12.0
  5. Affected versionversion=12l
  6. Affected versionversion=12L
  7. Affected versionversion=13
  8. Affected versionversion=13.0
  9. Affected versionversion=14
  10. Affected versionversion=14.0

What conditions does exploitation require?

Attack vectorlocal
Required privilegesUnavailable in this record.

What is affected?

Google · Androidversion=11; version=11.0; version=12; version=12.0; version=12l; version=12L; version=13; version=13.0; version=14; version=14.0

Published CVSS scores

8.4CISA-ADPCVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/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.

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)
Vectorlocal
PrivilegesUnavailable
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-122Heap-based Buffer Overflow
T1404Exploitation for Privilege Escalation

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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