CVE-2021-1015

Local app enumeration via telephony side channel

Published Dec 15, 2021 · Updated Aug 3, 2024

Observable discrepancy in Android 12 PhoneInterfaceManager allows local users to determine whether an application is installed. The getMeidForSlot method in PhoneInterfaceManager.java produces an observable discrepancy that reveals installation state without package-query permission. A low-privileged local application can enumerate installed applications without user interaction, but the flaw does not provide data modification or service interruption.

CVSS severity3.3
Low
EPSS probability0.11%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Observable discrepancy in Android 12 PhoneInterfaceManager allows local users to determine whether an application is installed. The getMeidForSlot method in PhoneInterfaceManager.java produces an observable discrepancy that reveals installation state without package-query permission. A low-privileged local application can enumerate installed applications without user interaction, but the flaw does not provide data modification or service interruption.

The record

CVE
CVE-2021-1015
Published
Dec 15, 2021
Updated
Aug 3, 2024
Vendor
Google Cloud
Product
Android
Classifications
CWE-203, T1418
Attack vector
local
Privileges
Unavailable

Timeline

How it unfolded

  1. Dec 15, 2021CVE publishedPublication date reported by the CVE source.
  2. Aug 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?

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  1. Affected versionversion=Android-12

What conditions does exploitation require?

Attack vectorlocal
Required privilegesUnavailable in this record.

What is affected?

Google Cloud · Androidversion=Android-12

Published CVSS scores

3.3NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
2.1NIST NVDAV:L/AC:L/Au:N/C:P/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)
Vectorlocal
PrivilegesUnavailable
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-203Observable Discrepancy
T1418Software Discovery

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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