CVE-2025-36897Network attack vector

Remote code execution via unchecked modem message bounds

Published Sep 4, 2025 · Updated Feb 26, 2026

Out-of-bounds write in Android's Pixel cellular modem allows remote attackers to execute code through malformed cellular input. Code in cd_CnMsgCodecUserApi.cpp omits a bounds check while processing modem messages, allowing data to be written past an intended buffer. No privileges or user interaction are required; successful exploitation can compromise data and interrupt the affected Pixel device.

CVSS severity9.8
Critical
EPSS probability0.28%
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's Pixel cellular modem allows remote attackers to execute code through malformed cellular input. Code in cd_CnMsgCodecUserApi.cpp omits a bounds check while processing modem messages, allowing data to be written past an intended buffer. No privileges or user interaction are required; successful exploitation can compromise data and interrupt the affected Pixel device.

The record

CVE
CVE-2025-36897
Published
Sep 4, 2025
Updated
Feb 26, 2026
Vendor
Google Cloud
Product
Android
Classifications
CWE-787, T1203
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 4, 2025CVE publishedPublication date reported by the CVE source.
  2. Feb 26, 2026Record 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=Android kernel

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Google Cloud · Androidversion=Android kernel

Published CVSS scores

9.8CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/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.

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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)
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.

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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