CVE-2024-34740Public exploit

Local privilege escalation via binary XML length truncation

Published Aug 15, 2024 · Updated Aug 16, 2024

XML injection in Google Android 12, 12L, 13, and 14 allows local users to gain system privileges through crafted binary XML data. BinaryXmlSerializer.attributeBytesBase64 and attributeBytesHex write an array length through writeShort without rejecting values above 65,535, so the stored length wraps while attacker-controlled bytes remain in the stream. An installed app needs no additional execution privileges or user interaction; a 65,536-byte checksum can corrupt install_sessions.xml parsing and lead to system_server code execution.

CVSS severity7.8
High
EPSS probability0.15%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

XML injection in Google Android 12, 12L, 13, and 14 allows local users to gain system privileges through crafted binary XML data. BinaryXmlSerializer.attributeBytesBase64 and attributeBytesHex write an array length through writeShort without rejecting values above 65,535, so the stored length wraps while attacker-controlled bytes remain in the stream. An installed app needs no additional execution privileges or user interaction; a 65,536-byte checksum can corrupt install_sessions.xml parsing and lead to system_server code execution.

The record

CVE
CVE-2024-34740
Published
Aug 15, 2024
Updated
Aug 16, 2024
Vendor
Google
Product
Android
Classifications
CWE-190, CWE-91, T1068
Attack vector
local
Privileges
Unavailable

Timeline

How it unfolded

  1. Aug 15, 2024CVE publishedPublication date reported by the CVE source.
  2. Aug 16, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

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

  1. Affected versionversion=12
  2. Affected versionversion=12.0
  3. Affected versionversion=12.0l
  4. Affected versionversion=12L
  5. Affected versionversion=13
  6. Affected versionversion=13.0
  7. Affected versionversion=14
  8. Affected versionversion=14.0

What conditions does exploitation require?

Attack vectorlocal
Required privilegesUnavailable in this record.

What is affected?

Google · Androidversion=12; version=12.0; version=12.0l; version=12L; version=13; version=13.0; version=14; version=14.0

Published CVSS scores

7.8NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
7.7CISA-ADPCVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/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.

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 exploitPublished

Weakness, pattern, technique

CWE-190Integer Overflow or Wraparound
CWE-91XML Injection (aka Blind XPath Injection)
T1068Exploitation for Privilege Escalation

Public exploit references

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

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo