CVE-2026-10701 Incorrect boundary conditions in the Graphics: Text component

High 7.5 Published 2 Jun 2026 Updated 15 Jul 2026

Incorrect boundary conditions in Firefox's text rendering allow attackers to cause memory corruption, potentially leading to code execution or crashes.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Over the internet
Victim action needed: Not needed
Fix: Available

What is CVE-2026-10701?

CVE-2026-10701 is a high-severity memory corruption vulnerability in Mozilla Firefox, published on 2 Jun 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

Incorrect boundary conditions in the Graphics: Text component. This vulnerability was fixed in Firefox 151.0.3.

Weakness: CWE-131, CWE-119

Which versions are affected by CVE-2026-10701?

It affects 1 product.

Products include Mozilla Firefox.

How do I fix CVE-2026-10701?

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-2026-10701 being exploited?

There is no known exploitation of CVE-2026-10701 in the wild and no public exploit code.

All Mozilla Firefox vulnerabilities

Sources

Also known as GHSA-3vrv-754q-mq3j, UBUNTU-CVE-2026-10701.