CVE-2014-7914

Access restriction bypass via retained temporary link key

Published Feb 21, 2020 · Updated Aug 6, 2024

Incorrect authorization in Google Android before 5.1 allows remote attackers to bypass access restrictions through Bluetooth pairing. The btif/src/btif_dm.c pairing control block treats an unset temporary-pairing flag as persistent, causing a temporary link key to be stored. Exploitation requires a user to tap a crafted NFC tag and then process crafted Bluetooth packets, after which the unintended persistent bond retains access.

CVSS severity8.1
High
EPSS probability0.47%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Incorrect authorization in Google Android before 5.1 allows remote attackers to bypass access restrictions through Bluetooth pairing. The btif/src/btif_dm.c pairing control block treats an unset temporary-pairing flag as persistent, causing a temporary link key to be stored. Exploitation requires a user to tap a crafted NFC tag and then process crafted Bluetooth packets, after which the unintended persistent bond retains access.

The record

CVE
CVE-2014-7914
Published
Feb 21, 2020
Updated
Aug 6, 2024
Vendor
Google
Product
Android
Classifications
CWE-863
Attack vector
adjacent
Privileges
unauthenticated

Timeline

How it unfolded

  1. Feb 21, 2020CVE publishedPublication date reported by the CVE source.
  2. Aug 6, 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=before 5.1

What conditions does exploitation require?

Attack vectoradjacent
Required privilegesunauthenticated

What is affected?

Google · Androidversion=before 5.1

Published CVSS scores

8.1NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N
5.8NIST NVDAV:N/AC:M/Au:N/C:P/I:P/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 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectoradjacent
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-863Incorrect Authorization

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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