CVE-2026-84117
Privilege escalation in Firefox for Android
HIGH
8.8
CVSS Score
Published: September 1, 2026 at 12:18 PM UTC
Updated: September 3, 2026 at 03:34 PM UTC
1 product affected across 1 vendorFirefox Mobile
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Severity
HIGH8.8
Exploit prediction
EPSS 0.3%
SSVC
No known exploit
Description
Privilege escalation in Firefox for Android. This vulnerability was fixed in Firefox 155.
Affected
Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.
v < 155.0
Affected range stops below 155.0, so it looks safe — our inference, not a vendor statement
Remediation
No guide yetNo remediation guidance has been written for this CVE yet. What the record does show:
Patch and advisory references
References (2)
SSVC — Action Prioritization
SSVCNo known exploitNot automatableTotal impact
SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.
CVSS
8.8HIGHCISA-ADP
- Attack Vector
- NETWORK
- Complexity
- LOW
- Privileges
- NONE
- User Interaction
- REQUIRED
- Scope
- UNCHANGED
- Confidentiality
- HIGH
- Integrity
- HIGH
- Availability
- HIGH
Vector?
Quick Info
StatusANALYZED
CWE
CWE-284
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