Privilege escalation
Published Sep 15, 2026 · Updated Sep 15, 2026
Privilege escalation in Mozilla Firefox before 156 allows attackers to gain elevated browser privileges via unspecified vectors. Mozilla has not publicly described the faulty WebExtensions operation or the input that reaches it. The required attacker position, privileges, and interaction are undisclosed, so the consequence is bounded to privilege escalation within Firefox.
Summary
What happened
Privilege escalation in Mozilla Firefox before 156 allows attackers to gain elevated browser privileges via unspecified vectors. Mozilla has not publicly described the faulty WebExtensions operation or the input that reaches it. The required attacker position, privileges, and interaction are undisclosed, so the consequence is bounded to privilege escalation within Firefox.
The record
- CVE
- CVE-2026-92015
- Published
- Sep 15, 2026
- Updated
- Sep 15, 2026
- Vendor
- Unknown vendor
- Product
- Unknown product
- Classifications
- Unavailable
- Attack vector
- Unavailable
- Privileges
- Unavailable
Timeline
How it unfolded
- Sep 15, 2026CVE publishedPublication date reported by the CVE source.
- Sep 15, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
What conditions does exploitation require?
What is affected?
Affected products and versions are unavailable in this record.
Published CVSS scores
No CVSS assessment is available in this record.
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Weakness, pattern, technique
No sourced classifications are available.
Public exploit references
No public exploit references are available in this record.
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Technologies
Your stack
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Your stack
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