CVE-2016-6591

Protected-app access via Android pinning selections

Published Jan 8, 2020 · Updated Aug 6, 2024

Authentication bypass in Symantec Norton App Lock before 1.0.3.186 allows physically proximate attackers to open locked Android apps. With Android application pinning enabled on a subset of devices, a specific sequence of on-device selections opens a protected app without the configured password or pattern. Physical device access, user interaction, and the affected pinning configuration are required; exposure is limited to data reachable through the opened app.

CVSS severity6.6
Medium
EPSS probability0.29%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Authentication bypass in Symantec Norton App Lock before 1.0.3.186 allows physically proximate attackers to open locked Android apps. With Android application pinning enabled on a subset of devices, a specific sequence of on-device selections opens a protected app without the configured password or pattern. Physical device access, user interaction, and the affected pinning configuration are required; exposure is limited to data reachable through the opened app.

The record

CVE
CVE-2016-6591
Published
Jan 8, 2020
Updated
Aug 6, 2024
Vendor
Symantec
Product
Norton App Lock
Classifications
CWE-863
Attack vector
physical
Privileges
Unavailable

Timeline

How it unfolded

  1. Jan 8, 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?

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

  1. Affected versionversion=1.0.3.186 and earlier

What conditions does exploitation require?

Attack vectorphysical
Required privilegesUnavailable in this record.

What is affected?

Symantec · Norton App Lockversion=1.0.3.186 and earlier

Published CVSS scores

7.1NVDCVSS:3.1/AV:P/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N
6.6SymantecCVSS:3.0/AV:P/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:N
3.3NVDAV:L/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)
Vectorphysical
PrivilegesUnavailable
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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