CVE-2023-21223Network attack vector

Remote information disclosure via unchecked GNSS data

Published Jun 28, 2023 · Updated Dec 3, 2024

Out-of-bounds read in Google Cloud's Android kernel allows remote attackers to disclose information through crafted GNSS assistance data. LPP_ConvertGNSS_DataBitAssistance in LPP_CommonUtil.c reads beyond a buffer because it fails to check an input-dependent bound. No privileges or user interaction are required, but exposure is limited to supported Pixel devices using the Exynos SLSI component.

CVSS severity7.5
High
EPSS probability0.44%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Out-of-bounds read in Google Cloud's Android kernel allows remote attackers to disclose information through crafted GNSS assistance data. LPP_ConvertGNSS_DataBitAssistance in LPP_CommonUtil.c reads beyond a buffer because it fails to check an input-dependent bound. No privileges or user interaction are required, but exposure is limited to supported Pixel devices using the Exynos SLSI component.

The record

CVE
CVE-2023-21223
Published
Jun 28, 2023
Updated
Dec 3, 2024
Vendor
Google Cloud
Product
Android
Classifications
Unavailable
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jun 28, 2023CVE publishedPublication date reported by the CVE source.
  2. Dec 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?

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

  1. Affected versionversion=Android kernel

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Google Cloud · Androidversion=Android kernel

Published CVSS scores

7.5NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A: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.

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No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

No sourced classifications are available.

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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