CVE-2017-13311

Local privilege escalation via unchecked parcel array length

Published Nov 15, 2024 · Updated Nov 19, 2024

Privilege escalation in Android 7.0 through 8.1 allows local users to start an activity with system privileges through a crafted parcel. SparseMappingTable.readFromParcel accepts a final backing array whose length does not match mNextIndex, allowing inconsistent serialized process-statistics state to bypass permission boundaries. Exploitation requires a locally installed application but no user interaction, and grants that application system-level activity-launch privileges.

CVSS severity6.7
Medium
EPSS probability0.07%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Privilege escalation in Android 7.0 through 8.1 allows local users to start an activity with system privileges through a crafted parcel. SparseMappingTable.readFromParcel accepts a final backing array whose length does not match mNextIndex, allowing inconsistent serialized process-statistics state to bypass permission boundaries. Exploitation requires a locally installed application but no user interaction, and grants that application system-level activity-launch privileges.

The record

CVE
CVE-2017-13311
Published
Nov 15, 2024
Updated
Nov 19, 2024
Vendor
Google Cloud
Product
Android
Classifications
CWE-276, T1626
Attack vector
local
Privileges
Unavailable

Timeline

How it unfolded

  1. Nov 15, 2024CVE publishedPublication date reported by the CVE source.
  2. Nov 19, 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=7
  2. Affected versionversion=8
  3. Affected versionversion=8.1
  4. Affected versionversion=nyc-mr1-dev
  5. Affected versionversion=nyc-mr2-dev

What conditions does exploitation require?

Attack vectorlocal
Required privilegesUnavailable in this record.

What is affected?

Google Cloud · Androidversion=7; version=8; version=8.1; version=nyc-mr1-dev; version=nyc-mr2-dev

Published CVSS scores

7.8CISA ADPCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
6.7NVDCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

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-276Incorrect Default Permissions
T1626Abuse Elevation Control Mechanism

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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