CVE-2017-13323

Local privilege escalation via String16 length overflow

Published Nov 27, 2024 · Updated Nov 29, 2024

Out-of-bounds write in String16.cpp in Google Android 6.0 through 8.1 and Pixel devices allows local users to elevate privileges. String16 allocation and append paths calculate UTF-16 buffer sizes without overflow checks, then copy or terminate data using the original lengths. Exploitation runs from an unprivileged local process without user interaction and can execute with elevated privileges.

CVSS severity7.8
High
EPSS probability0.09%
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 String16.cpp in Google Android 6.0 through 8.1 and Pixel devices allows local users to elevate privileges. String16 allocation and append paths calculate UTF-16 buffer sizes without overflow checks, then copy or terminate data using the original lengths. Exploitation runs from an unprivileged local process without user interaction and can execute with elevated privileges.

The record

CVE
CVE-2017-13323
Published
Nov 27, 2024
Updated
Nov 29, 2024
Vendor
Google
Product
Google Pixel
Classifications
CWE-787, CWE-190, T1404
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Nov 27, 2024CVE publishedPublication date reported by the CVE source.
  2. Nov 29, 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=0 <2018-05-05

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

Google · Google Pixelversion=0 <2018-05-05
Google · Androidversion=0 <2018-05-05; version=6; version=6.0.1; version=7; version=7.1.1; version=7.1.2; version=8; version=8.1

Published CVSS scores

8.4CISA-ADPCVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
7.8NIST NVDCVSS: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.

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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-787Out-of-bounds Write
CWE-190Integer Overflow or Wraparound
T1404Exploitation for Privilege Escalation

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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