CVE-2023-40085

Local information disclosure via unchecked HAL subgraph

Published Feb 16, 2024 · Updated Nov 1, 2024

Out-of-bounds read in Android 12, 12L, and 13 allows local users to disclose information through a malformed HAL subgraph. convertSubgraphFromHAL in ShimConverter.cpp fails to bounds-check data while converting the subgraph, permitting an out-of-range read. Exploitation requires local access but no additional execution privileges or user interaction, and the reported effect is disclosure only.

CVSS severity5.5
Medium
EPSS probability0.09%
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 Android 12, 12L, and 13 allows local users to disclose information through a malformed HAL subgraph. convertSubgraphFromHAL in ShimConverter.cpp fails to bounds-check data while converting the subgraph, permitting an out-of-range read. Exploitation requires local access but no additional execution privileges or user interaction, and the reported effect is disclosure only.

The record

CVE
CVE-2023-40085
Published
Feb 16, 2024
Updated
Nov 1, 2024
Vendor
Google
Product
Android
Classifications
CWE-125, T1533
Attack vector
local
Privileges
Unavailable

Timeline

How it unfolded

  1. Feb 16, 2024CVE publishedPublication date reported by the CVE source.
  2. Nov 1, 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=12
  2. Affected versionversion=12L
  3. Affected versionversion=13

What conditions does exploitation require?

Attack vectorlocal
Required privilegesUnavailable in this record.

What is affected?

Google · Androidversion=12; version=12L; version=13

Published CVSS scores

5.5NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
3.3CISA-ADPCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/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.

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-125Out-of-bounds Read
T1533Data from Local System

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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