CVE-2026-9123 Memory corruption in Chrome

What is CVE-2026-9123?

CVE-2026-9123 is a high-severity memory corruption vulnerability in Google Chrome, published on 20 May 2026. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

Heap buffer overflow in Chromecast in Google Chrome on Android, Linux, ChromeOS prior to 148.0.7778.179 allowed a local attacker to execute arbitrary code inside a sandbox via malicious network traffic. (Chromium security severity: Medium)

Weakness: CWE-122

Which versions are affected by CVE-2026-9123?

It affects 1 product.

Products include Google Chrome.

How do I fix CVE-2026-9123?

Upgrade to a fixed version.

Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.

Is CVE-2026-9123 being exploited?

There is no known exploitation of CVE-2026-9123 in the wild and no public exploit code.

Other vulnerabilities in Google Chrome

• CVE-2022-4135 Google Chromium GPU Heap Buffer Overflow Exploited Critical 9.6
• CVE-2020-16017 Google Chrome Use-After-Free Exploited Critical 9.6
• CVE-2020-16010 Google Chrome for Android UI Heap Buffer Overflow Exploited Critical 9.6
• CVE-2026-87491 Google Chromium V8 Out of Bounds Write Exploited High 8.8
• CVE-2026-85046 Google Chromium V8 Type Confusion Exploited High 8.8

All Google Chrome vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as DEBIAN-CVE-2026-9123, ECHO-13d2-5278-fd42, GHSA-q8x9-c3xr-45r5, MINI-5pww-rp53-frfm.