CVE-2026-74969
HIGH
MEDIUM
Priority: 0.04
BB Relevance:
68/100
Published: 2026-08-18
Modified: 2026-10-28
First seen: 2026-10-29
Status: active
Attack Surface
Network
Low Complexity
No Auth
Conf. Impact
Integ. Impact
CVSS Vector Breakdown
AV:
Network
AC:
Low
PR:
None
UI:
Required
S:
Unchanged
C:
High
I:
High
A:
High
Description
Race condition, 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.
Weakness Classification (1)
Affected Software (10)
| Vendor | Product | Version |
|---|---|---|
| mozilla | firefox | < 115.39.0 |
| mozilla | firefox | 116.0 – 140.14.0 |
| mozilla | firefox | 141.0 – 153.1.0 |
| mozilla | firefox | < 115.39.0 |
| mozilla | firefox | 116.0 – 140.14.0 |
| mozilla | firefox | 141.0 – 153.1.0 |
| mozilla | thunderbird | < 140.14.0 |
| mozilla | thunderbird | 141.0 – 153.1.0 |
| mozilla | thunderbird | < 140.14.0 |
| mozilla | thunderbird | 141.0 – 153.1.0 |
References & Advisories (8)
Vendor Advisory
Vendor Advisory
Vendor Advisory
Vendor Advisory
Vendor Advisory
Vendor Advisory
Vendor Advisory
Permissions Required