Threat Investigation
Request a demo

CVE-2025-13027

High

Description

Memory safety bugs present in Firefox 144 and Thunderbird 144. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability was fixed in Firefox 145 and Thunderbird 145.

SeverityHigh
CVSS8.1
Exploit probability—
ProductMozilla Firefox
PublishedNov 11, 2025
First seenNov 11, 2025
Weakness typeCWE-119Memory buffer bounds error

How to fix

Update
  • mozilla firefox145.0 or later

Affected products

ProductAffected versionsFixed in
mozilla firefoxv < 145.0145.0

Check your version

Choose the product and enter the version you run to see whether it falls in the affected range.

In the Intelligence 360 plan

Attack Surface Management

See the assets tied to your domains, the technologies they run and known vulnerabilities in one list.