CVE-2021-39726Network attack vector

Remote information disclosure via incorrect bounds check

Published Mar 16, 2022 · Updated Aug 4, 2024

Out-of-bounds read in the modem's cd_ParseMsg function in Google Pixel devices allows remote attackers to disclose Android kernel memory. The function in cd_codec.c applies an incorrect bounds check while parsing a message, causing data to be read beyond the intended buffer. Exploitation needs no additional execution privileges or user interaction, and the reported consequence is limited to remote information disclosure.

CVSS severity7.5
High
EPSS probability0.76%
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 read in the modem's cd_ParseMsg function in Google Pixel devices allows remote attackers to disclose Android kernel memory. The function in cd_codec.c applies an incorrect bounds check while parsing a message, causing data to be read beyond the intended buffer. Exploitation needs no additional execution privileges or user interaction, and the reported consequence is limited to remote information disclosure.

The record

CVE
CVE-2021-39726
Published
Mar 16, 2022
Updated
Aug 4, 2024
Vendor
Google
Product
Google Pixel
Classifications
CWE-125
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Mar 16, 2022CVE publishedPublication date reported by the CVE source.
  2. Aug 4, 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 vectornetwork
Required privilegesunauthenticated

What is affected?

Google · Google Pixelversion=Android kernel

Published CVSS scores

5.0NISTAV:N/AC:L/Au:N/C:P/I:N/A:N
7.5NISTCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

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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)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-125Out-of-bounds Read

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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