CVE-2017-13312Public exploit

Local privilege escalation via malformed parcel deserialization

Published Nov 15, 2024 · Updated Nov 19, 2024

Improper input validation in Android 8 MediaCas allows local users to start an activity with system privileges through a malformed parcel. MediaCas.java's createFromParcel reads crafted ParcelableCasData content inconsistently with its serialized layout, causing trailing parcel data to be interpreted as a privileged Intent. A low-privileged application can reach the path without user interaction and launch an activity with system privileges.

CVSS severity7.8
High
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

Improper input validation in Android 8 MediaCas allows local users to start an activity with system privileges through a malformed parcel. MediaCas.java's createFromParcel reads crafted ParcelableCasData content inconsistently with its serialized layout, causing trailing parcel data to be interpreted as a privileged Intent. A low-privileged application can reach the path without user interaction and launch an activity with system privileges.

The record

CVE
CVE-2017-13312
Published
Nov 15, 2024
Updated
Nov 19, 2024
Vendor
Google Cloud
Product
Android
Classifications
CWE-276, T1404
Attack vector
local
Privileges
authenticated

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=8

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

Google Cloud · Androidversion=8

Published CVSS scores

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

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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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-276Incorrect Default Permissions
T1404Exploitation for Privilege Escalation

Public exploit references

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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