CVE-2023-21217

Local privilege escalation via page-list integer overflow

Published Dec 4, 2023 · Updated Aug 2, 2024

An out-of-bounds write in Android's PowerVR GPU component allows local users to elevate privileges through PMRWritePMPageList. Integer overflow in PMRWritePMPageList causes the function to write beyond its intended memory bounds while processing a page list. Exploitation requires local access to an affected SoC device, but needs no additional execution privileges or user interaction.

CVSS severity9.8
Critical
EPSS probability0.41%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

An out-of-bounds write in Android's PowerVR GPU component allows local users to elevate privileges through PMRWritePMPageList. Integer overflow in PMRWritePMPageList causes the function to write beyond its intended memory bounds while processing a page list. Exploitation requires local access to an affected SoC device, but needs no additional execution privileges or user interaction.

The record

CVE
CVE-2023-21217
Published
Dec 4, 2023
Updated
Aug 2, 2024
Vendor
Google
Product
Android
Classifications
T1404
Attack vector
local
Privileges
Unavailable

Timeline

How it unfolded

  1. Dec 4, 2023CVE publishedPublication date reported by the CVE source.
  2. Aug 2, 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=Android SoC

What conditions does exploitation require?

Attack vectorlocal
Required privilegesUnavailable in this record.

What is affected?

Google · Androidversion=Android SoC

Published CVSS scores

9.8NIST NVDCVSS:3.1/AV:N/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.

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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
PrivilegesUnavailable
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

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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