CVE-2025-1292

Persistence via unchecked TPM NV_Read response size

Published Apr 15, 2025 · Updated Apr 17, 2025

Out-of-bounds write in ChromeOS 122.0.6261.132 on Cr50 boards allows local users with root access to bypass operating system verification. TPM2_NV_Read checks the requested span against the NV index but fails to reject a response larger than its fixed output buffer before NvGetIndexData copies it. Exploitation requires root access during the challenge-response process and grants persistence beyond the platform's normal verification boundary.

CVSS severity6.7
Medium
EPSS probability0.19%
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 ChromeOS 122.0.6261.132 on Cr50 boards allows local users with root access to bypass operating system verification. TPM2_NV_Read checks the requested span against the NV index but fails to reject a response larger than its fixed output buffer before NvGetIndexData copies it. Exploitation requires root access during the challenge-response process and grants persistence beyond the platform's normal verification boundary.

The record

CVE
CVE-2025-1292
Published
Apr 15, 2025
Updated
Apr 17, 2025
Vendor
Google
Product
ChromeOS
Classifications
CWE-787, T1542.001
Attack vector
local
Privileges
admin

Timeline

How it unfolded

  1. Apr 15, 2025CVE publishedPublication date reported by the CVE source.
  2. Apr 17, 2025Record 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=122.0.6261.132

What conditions does exploitation require?

Attack vectorlocal
Required privilegesadmin

What is affected?

Google · ChromeOSversion=122.0.6261.132

Published CVSS scores

6.7CISA-ADPCVSS:3.1/AV:L/AC:L/PR:H/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)
Vectorlocal
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-787Out-of-bounds Write
T1542.001Pre-OS Boot System Firmware

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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