CVE-2023-25736 Memory corruption in Firefox

What is CVE-2023-25736?

CVE-2023-25736 is a critical memory corruption vulnerability in Mozilla Firefox, published on 19 Jun 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

An invalid downcast from `nsHTMLDocument` to `nsIContent` could have lead to undefined behavior. This vulnerability affects Firefox < 110.

Which versions are affected by CVE-2023-25736?

It affects 1 product.

Products include Mozilla Firefox.

How do I fix CVE-2023-25736?

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-2023-25736 being exploited?

There is no known exploitation of CVE-2023-25736 in the wild and no public exploit code.

Other vulnerabilities in Mozilla Firefox

• CVE-2019-11708 Mozilla Firefox and Thunderbird Sandbox Escape Exploited Critical 10.0
• CVE-2010-3765 Mozilla Multiple Products Remote Code Execution Exploited Critical 9.8
• CVE-2022-26486 Mozilla Firefox Use-After-Free Exploited Critical 9.6
• CVE-2022-26485 Mozilla Firefox Use-After-Free Exploited High 8.8
• CVE-2019-11707 Mozilla Firefox and Thunderbird Type Confusion Exploited High 8.8

All Mozilla Firefox vulnerabilities

Sources

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

Also known as GHSA-vg8c-w3pf-2vfh, UBUNTU-CVE-2023-25736.