CVE-2026-100801 - Vulnerability Details - OpenCVE

Privilege escalation in the DLL Services component. This vulnerability was fixed in Firefox ESR 153.4, Firefox 157, and Firefox ESR 140.17.

No CVSS v4.0

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact High

Integrity Impact High

Availability Impact High

User Interaction Required

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Exploitation none

Automatable no

Technical Impact total

No data.

No data.

No data.

No data.

Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References

Link	Providers
https://bugzilla.mozilla.org/show_bug.cgi?id=2057112
https://www.mozilla.org/security/advisories/mfsa2026-100/
https://www.mozilla.org/security/advisories/mfsa2026-97/
https://www.mozilla.org/security/advisories/mfsa2026-99/

History

Tue, 29 Sep 2026 14:30:00 +0000

Type	Values Removed	Values Added
Weaknesses		CWE-269
Metrics		cvssV3_1 `{'score': 8.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H'}` ssvc `{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}`

Tue, 29 Sep 2026 13:15:00 +0000

Type	Values Removed	Values Added
Description		Privilege escalation in the DLL Services component. This vulnerability was fixed in Firefox ESR 153.4, Firefox 157, and Firefox ESR 140.17.
Title		Privilege escalation in the DLL Services component
References		https://bugzilla.mozilla.org/show_bug.cgi?id=2057112 https://www.mozilla.org/security/advisories/mfsa2026-100/ https://www.mozilla.org/security/advisories/mfsa2026-97/ https://www.mozilla.org/security/advisories/mfsa2026-99/

Projects

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MITRE

Status: PUBLISHED

Assigner: mozilla

Published: 2026-09-29T12:36:19.049Z

Updated: 2026-09-29T13:36:16.574Z

Reserved: 2026-09-26T19:17:46.301Z

Link: CVE-2026-100801

Vulnrichment

Updated: 2026-09-29T13:36:13.097Z

NVD

Status : Received

Published: 2026-09-29T13:17:45.180

Modified: 2026-09-29T14:17:17.223

Link: CVE-2026-100801

Redhat

No data.

OpenCVE Enrichment

No data.

Weaknesses

CWE-269

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