CVE-2026-74969
Modified
Modified - Updated After Analysis
Use-after-free in Firefox Layout Text and Fonts
Vulnerability report for CVE-2026-74969, including description, CVSS score, EPSS score, affected products, exploitability, helpful resources, and attack-flow context.
Publication date: 2026-08-18
Last updated on: 2026-08-19
Assigner: Mozilla Corporation
Description
Description
Use-after-free in the Layout: Text and Fonts component. This vulnerability was fixed in Firefox 154, Firefox ESR 115.39, Firefox ESR 140.14, Firefox ESR 153.1, Thunderbird 154, Thunderbird 140.14, and Thunderbird 153.1.
CVSS Scores
EPSS Scores
| Probability: | |
| Percentile: |
Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| mozilla | firefox | to 115.39.0 (exc) |
| mozilla | firefox | From 116.0 (inc) to 140.14.0 (exc) |
| mozilla | firefox | From 141.0 (inc) to 153.1.0 (exc) |
| mozilla | thunderbird | From 141.0 (inc) to 153.1.0 (exc) |
| mozilla | thunderbird | to 140.14.0 (exc) |
Helpful Resources
Exploitability
CWE
KEV
| CWE ID | Description |
|---|---|
| CWE-359 | The product does not properly prevent a person's private, personal information from being accessed by actors who either (1) are not explicitly authorized to access the information or (2) do not have the implicit consent of the person about whom the information is collected. |
| CWE-416 | The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer. |
