CVE-2026-74938
⛔ criticalSummary
Mitigation bypass in the JavaScript: GC component. This vulnerability was fixed in Firefox 154, Firefox ESR 153.1, Thunderbird 154, and Thunderbird 153.1.
CVSS Score
9.1
Critical
EPSS Score
0.3
Exploit Probability
Published Date
2026-08-18
First Seen: 2026-08-19
📊 Relative Risk Intelligence
This CVE is High Risk - more severe than 87.6% of all 348,756 vulnerabilities in our database.
#43,380
Top 25% most severe
Severity Percentile
🎯 CISA SSVC Assessment Updated: Aug 18, 2026
🔍 Exploitation Status
None
No known exploits
⚙️ Automatable
YES
Can be exploited automatically
💥 Technical Impact
Total
Complete system compromise possible
🏆 Discovered By
Amy Burnett of OpenAI
SSVC data provided by
CISA
Last Modified
2026-08-19
Source
NVD 🔗
CVSS Vector 3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
CWE IDs (Weakness Types)