CVE-2026-84123
⚠️ highSummary
Privilege escalation due to use-after-free in the Graphics: WebGPU component. This vulnerability was fixed in Firefox 155, Firefox ESR 153.2, Thunderbird 155, and Thunderbird 153.2.
CVSS Score
8.8
High
EPSS Score
0.2
Exploit Probability
Published Date
2026-09-01
First Seen: 2026-09-03
📊 Relative Risk Intelligence
This CVE is High Risk - more severe than 80.8% of all 360,548 vulnerabilities in our database.
#69,224
Top 25% most severe
Severity Percentile
🎯 CISA SSVC Assessment Updated: Sep 1, 2026
🔍 Exploitation Status
None
No known exploits
⚙️ Automatable
NO
Requires human interaction
💥 Technical Impact
Total
Complete system compromise possible
🏆 Discovered By
Yaqoub Aldurayhim
SSVC data provided by
CISA
Last Modified
2026-09-02
Source
NVD 🔗
CVSS Vector 3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CWE IDs (Weakness Types)