CVE-2026-15903: Out of bounds read and write in V8 in Google Chrome prior to 150.0.7871.128 allowed a remote attacker to execu

Q: How do I fix CVE-2026-15903?

chrome: upgrade to 150.0.7871.128. Exact commands for each OS are on this page.

Q: Is CVE-2026-15903 being exploited?

CVE-2026-15903 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2026-15903 affect?

CVE-2026-15903 affects chrome. Severity is high (CVSS 8.8). Out of bounds read and write in V8 in Google Chrome prior to 150.0.7871.128 allowed a remote attacker to execute arbitrary code inside a sandbox via a crafted HTML page. (Chromium security severity: High)

Routine

HIGH 8.8UPGRADE

CVE-2026-15903 is a high-severity flaw (CVSS 8.8) affecting chrome. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Out of bounds read and write in V8 in Google Chrome prior to 150.0.7871.128 allowed a remote attacker to execute arbitrary code inside a sandbox via a crafted HTML page. (Chromium security severity: High)

Why this priority

High severity

A fixed release or distro patch exists.

Risk facts

CVSS score	8.8 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	0.4% (top 65%)
CISA exploited list	No
Weakness	CWE-125, CWE-787
Published	2026-07-20
Last modified	2026-10-24

Publisher (CNA): Chrome · Vendor: google

Last updated 2026-10-24 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-07-20 23:16 UTCPublished CVE record published
2026-10-24 20:10 UTCUpdated Record last modified

google chrome UPGRADE

Affected: < 150.0.7871.128

Fixed in: 150.0.7871.128

Safe to downgrade to: no unaffected older release

1. Check installed version

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

2. UPGRADE to 150.0.7871.128 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade chrome

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade chrome

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

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-2026-15903?

chrome: upgrade to 150.0.7871.128. Exact commands for each OS are on this page.

Is CVE-2026-15903 being exploited?

CVE-2026-15903 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-2026-15903 affect?

CVE-2026-15903 affects chrome. Severity is high (CVSS 8.8). Out of bounds read and write in V8 in Google Chrome prior to 150.0.7871.128 allowed a remote attacker to execute arbitrary code inside a sandbox via a crafted HTML page. (Chromium security severity: High)

How urgent is CVE-2026-15903?

Priority 39/100. High severity

Software pages

Google Chrome vulnerabilities · Chromium vulnerabilities

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References

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