CVE-2021-0450

Stack memory disclosure via uninitialized firmware data

Published Mar 10, 2021 · Updated Aug 3, 2024

Information disclosure in Google Titan M firmware for the Android kernel allows local users with System privileges to read stack memory. The firmware exposes stack-backed data without initializing it first, revealing residual contents from earlier operations. Exploitation requires local System execution privileges and no user interaction; no integrity or availability impact is reported.

CVSS severity4.4
Medium
EPSS probability0.12%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Information disclosure in Google Titan M firmware for the Android kernel allows local users with System privileges to read stack memory. The firmware exposes stack-backed data without initializing it first, revealing residual contents from earlier operations. Exploitation requires local System execution privileges and no user interaction; no integrity or availability impact is reported.

The record

CVE
CVE-2021-0450
Published
Mar 10, 2021
Updated
Aug 3, 2024
Vendor
Google
Product
Titan M
Classifications
CWE-665, T1005
Attack vector
local
Privileges
admin

Timeline

How it unfolded

  1. Mar 10, 2021CVE publishedPublication date reported by the CVE source.
  2. Aug 3, 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?

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  1. Affected versionversion=Android kernel

What conditions does exploitation require?

Attack vectorlocal
Required privilegesadmin

What is affected?

Google · Titan Mversion=Android kernel

Published CVSS scores

2.1NIST NVDAV:L/AC:L/Au:N/C:P/I:N/A:N
4.4NIST NVDCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:N/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.

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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
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-665Improper Initialization
T1005Data from Local System

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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