CVE-2021-21140 Memory corruption in Chrome

What is CVE-2021-21140?

CVE-2021-21140 is a medium-severity memory corruption vulnerability in Google Chrome, published on 9 Feb 2021. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

Uninitialized use in USB in Google Chrome prior to 88.0.4324.96 allowed a local attacker to potentially perform out of bounds memory access via via a USB device.

Weakness: CWE-119

Which versions are affected by CVE-2021-21140?

It affects 2 products.

Products include Google Chrome, Microsoft Edge.

How do I fix CVE-2021-21140?

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-2021-21140 being exploited?

There is no known exploitation of CVE-2021-21140 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-2021-21140, GHSA-rcp2-2qxc-r85v, UBUNTU-CVE-2021-21140.