CVE-2018-9411Network attack vector

Remote code execution via unchecked subsample lengths

Published Nov 19, 2024 · Updated Nov 20, 2024

Out-of-bounds write in Android 8, 8.1, and 9 allows remote attackers to execute arbitrary code through crafted media content. ClearKeyCasSession::decrypt uses the sum of caller-supplied clear and encrypted subsample lengths as a copy size without checking the destination bounds. A user must cause the device to process the content; successful exploitation runs code in the privileged Media framework process.

CVSS severity8.8
High
EPSS probability0.57%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Out-of-bounds write in Android 8, 8.1, and 9 allows remote attackers to execute arbitrary code through crafted media content. ClearKeyCasSession::decrypt uses the sum of caller-supplied clear and encrypted subsample lengths as a copy size without checking the destination bounds. A user must cause the device to process the content; successful exploitation runs code in the privileged Media framework process.

The record

CVE
CVE-2018-9411
Published
Nov 19, 2024
Updated
Nov 20, 2024
Vendor
Google Cloud
Product
Android
Classifications
CWE-787, T1203
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Nov 19, 2024CVE publishedPublication date reported by the CVE source.
  2. Nov 20, 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
  2. Affected versionversion=8.1
  3. Affected versionversion=9

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Google Cloud · Androidversion=8; version=8.1; version=9

Published CVSS scores

8.8CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
8.8National Institute of Standards and TechnologyCVSS:3.1/AV:N/AC:L/PR:N/UI:R/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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-787Out-of-bounds Write
T1203Exploitation for Client Execution

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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