Authentication bypass by spoofing in Mozilla Firefox
Priority LOW 32CWE-290Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- Required
- Attack complexity
- Low
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- None · High · None
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA. Impact type from CWE-290.
Summary
Spoofing issue in Firefox for Android. This vulnerability was fixed in Firefox 153.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00275 20th percentileScored 2026-11-07
Fix Fixed Firefox (Mozilla): 153
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
Remediation
- Fix · CNA Firefox (Mozilla) Fixed in 153
Vendor assessments
Red Hat
Red Hat rating: Low. Red Hat's page for this CVE →
Not affected: 5 products
- Red Hat Enterprise Linux 10
- Red Hat Enterprise Linux 6
- Red Hat Enterprise Linux 7
- Red Hat Enterprise Linux 8
- Red Hat Enterprise Linux 9
Timeline
- 2026-10-02 Threatist record created from CVE-2026-16404
- 2026-10-03 Alias added: GHSA-rq8r-gxxv-8f29
References
More Mozilla Firefox Mobile vulnerabilities
- TI-2022-09832 Use after free in Mozilla Firefox KEVCVSS 3.1CRITICAL 9.6
- TI-2022-09831 Use after free in Mozilla Firefox KEVCVSS 3.1HIGH 8.8
- TI-2023-13905 Race condition in Mozilla Firefox for Android CVSS 3.1HIGH 7.5
- TI-2023-13916 A wrong lowering instruction in the ARM64 Ion compiler resulted in a wrong optimization… CVSS 3.1MEDIUM 6.5
- TI-2023-13903 Following a Garbage Collector compaction, weak maps may have been accessed before they… CVSS 3.1MEDIUM 6.5
- TI-2022-13642 Information disclosure in Mozilla Firefox for iOS CVSS 3.1MEDIUM 6.5
Sources
- CVE-2026-16404 · CVE Program
- CVE-2026-16404 · NVD
- FIRST EPSS
- GHSA-rq8r-gxxv-8f29 · GitHub Advisory Database · CC BY 4.0
- CVE-2026-16404 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences