CVE-2025-1122: Out-Of-Bounds Write in TPM2 Reference Library in Google ChromeOS 15753.50.0 stable on Cr50 Boards allows an a

Routine

MEDIUM 6.7DOWNGRADE

CVE-2025-1122 is a medium-severity flaw (CVSS 6.7) affecting chrome. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Out-Of-Bounds Write in TPM2 Reference Library in Google ChromeOS 15753.50.0 stable on Cr50 Boards allows an attacker with root access to gain persistence and Bypass operating system verification via exploiting the NV_Read functionality during the Challenge-Response process.

Why this priority

Public exploit reference

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	6.7 (Medium)
Attack vector	Local
Attack complexity	Low
Privileges needed	High
User interaction	None
EPSS exploit chance	0.2% (top 86%)
CISA exploited list	No
Weakness	CWE-787
Published	2025-04-15
Last modified	2026-06-17

Publisher (CNA): ChromeOS · Vendor: google

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2025-04-15 20:15 UTCPublished CVE record published
2026-06-17 08:38 UTCUpdated Record last modified

google chrome DOWNGRADE

Affected: 122.0.6261.132

Fixed in: no fixed release known

Safe to downgrade to: a release before 122.0.6261.132

1. Check installed version

apt-cache policy chrome || rpm -q chrome || chrome --version

2. No fixed release: DOWNGRADE to a release before 122.0.6261.132 (Debian / Ubuntu)

apt-cache madison chrome sudo apt install chrome=<VERSION_BEFORE_122.0.6261.132> sudo apt-mark hold chrome

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list chrome sudo dnf downgrade chrome-<VERSION_BEFORE_122.0.6261.132> sudo dnf versionlock add chrome

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2025-1122?

chrome: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2025-1122 being exploited?

CVE-2025-1122 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2025-1122 affect?

CVE-2025-1122 affects chrome. Severity is medium (CVSS 6.7). Out-Of-Bounds Write in TPM2 Reference Library in Google ChromeOS 15753.50.0 stable on Cr50 Boards allows an attacker with root access to gain persistence and Bypass operating system verification via exploiting the NV_Read functionality du

How urgent is CVE-2025-1122?

Priority 32/100. Public exploit reference

Software pages

Google Chrome vulnerabilities

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References

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