Privilege Escalation in Firefox for Android by Mozilla
CVE-2026-84117

8.8HIGH

Key Information:

Vendor

Mozilla
Status
Firefox
Vendor
CVE Published:
1 September 2026

What is CVE-2026-84117?

This vulnerability in Firefox for Android allows unauthorized privilege escalation, potentially enabling attackers to gain elevated access rights on the device. The issue has been addressed in version 155 of the browser, underscoring the importance of keeping applications updated to mitigate security risks.

Affected Version(s)

Firefox 155

References

https://bugzilla.mozilla.org/show_bug.cgi?id=2053320
https://www.mozilla.org/security/advisories/mfsa2026-82/

CVSS V3.1

Score:
8.8
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
Required
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

HiWorld
.