CVE-2021-39727

Local information disclosure via presentation-entry race condition

Published Mar 16, 2022 · Updated Aug 4, 2024

Race condition in Google Titan M2 Android kernel code allows local users with System privileges to disclose information without interaction. eicPresentationRetrieveEntryValue in acropora/app/identity/libeic/EicPresentation.c retrieves an entry value without sufficient synchronization, allowing concurrent execution to expose data. Exploitation requires System execution privileges and a successful race; Google has not disclosed the information exposed.

CVSS severity4.1
Medium
EPSS probability0.10%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Race condition in Google Titan M2 Android kernel code allows local users with System privileges to disclose information without interaction. eicPresentationRetrieveEntryValue in acropora/app/identity/libeic/EicPresentation.c retrieves an entry value without sufficient synchronization, allowing concurrent execution to expose data. Exploitation requires System execution privileges and a successful race; Google has not disclosed the information exposed.

The record

CVE
CVE-2021-39727
Published
Mar 16, 2022
Updated
Aug 4, 2024
Vendor
Google
Product
Titan M2
Classifications
CWE-362
Attack vector
local
Privileges
admin

Timeline

How it unfolded

  1. Mar 16, 2022CVE publishedPublication date reported by the CVE source.
  2. Aug 4, 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?

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  1. Affected versionversion=Android kernel

What conditions does exploitation require?

Attack vectorlocal
Required privilegesadmin

What is affected?

Google · Titan M2version=Android kernel

Published CVSS scores

1.9NIST NVDAV:L/AC:M/Au:N/C:P/I:N/A:N
4.1NIST NVDCVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:N/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

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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 exploitUnconfirmed

Weakness, pattern, technique

CWE-362Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')

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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