CVE-2026-100801
HIGH
MEDIUM
Priority: 0.02
BB Relevance:
68/100
Published: 2026-09-29
Modified: 2026-10-27
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
Privilege escalation in the DLL Services component. This vulnerability was fixed in Firefox ESR 153.4, Thunderbird 157, Thunderbird 140.17, Thunderbird 153.4, Firefox 159, Firefox ESR 153.6, Thunderbird 159, Thunderbird 153.6, Firefox 157, and Firefox ESR 140.17.
Weakness Classification (1)
Affected Software (12)
| Vendor | Product | Version |
|---|---|---|
| mozilla | firefox | < 140.17.0 |
| mozilla | firefox | 141.0 – 153.4.0 |
| mozilla | firefox | 154.0.0 – 157.0.0 |
| mozilla | firefox | < 140.17.0 |
| mozilla | firefox | 141.0 – 153.4.0 |
| mozilla | firefox | 154.0.0 – 157.0.0 |
| mozilla | thunderbird | < 140.17.0 |
| mozilla | thunderbird | 141.0 – 153.4.0 |
| mozilla | thunderbird | 154.0 – 157.0 |
| mozilla | thunderbird | < 140.17.0 |
| mozilla | thunderbird | 141.0 – 153.4.0 |
| mozilla | thunderbird | 154.0 – 157.0 |
References & Advisories (11)
Vendor Advisory
Vendor Advisory
Vendor Advisory
Vendor Advisory
Vendor Advisory
Vendor Advisory
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