CVE-2025-2509: Out-of-Bounds Read in Virglrenderer in ChromeOS 16093.57.0 allows a malicious guest VM to achieve arbitrary a

Routine

HIGH 7.8MITIGATE

CVE-2025-2509 is a high-severity flaw (CVSS 7.8) affecting chrome os. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Out-of-Bounds Read in Virglrenderer in ChromeOS 16093.57.0 allows a malicious guest VM to achieve arbitrary address access within the crosvm sandboxed process, potentially leading to VM escape via crafted vertex elements data triggering an out-of-bounds read in util_format_description.

Why this priority

High severity
Public exploit reference

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

Risk facts

CVSS score	7.8 (High)
Attack vector	Local
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	0.1% (top 99%)
CISA exploited list	No
Weakness	CWE-125
Published	2025-05-06
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

2025-05-06 01:15 UTCPublished CVE record published
2026-06-17 09:07 UTCUpdated Record last modified

google chrome os MITIGATE

Affected: 16093.57.0

Fixed in: no fixed release known

Safe to downgrade to: a release before 16093.57.0

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

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-2025-2509?

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

Is CVE-2025-2509 being exploited?

CVE-2025-2509 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-2025-2509 affect?

CVE-2025-2509 affects chrome os. Severity is high (CVSS 7.8). Out-of-Bounds Read in Virglrenderer in ChromeOS 16093.57.0 allows a malicious guest VM to achieve arbitrary address access within the crosvm sandboxed process, potentially leading to VM escape via crafted vertex elements data triggering a

How urgent is CVE-2025-2509?

Priority 33/100. High severity; Public exploit reference

Software pages

Google Chrome vulnerabilities

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References

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