CVE-2026-74940
⛔ criticalSummary
Use-after-free in the Graphics: Text component. This vulnerability was fixed in Firefox 154, Firefox ESR 115.39, Firefox ESR 140.14, Firefox ESR 153.1, Thunderbird 154, Thunderbird 140.14, and Thunderbird 153.1.
CVSS Score
9.8
Critical
EPSS Score
0.4
Exploit Probability
Published Date
2026-08-18
First Seen: 2026-08-19
📊 Relative Risk Intelligence
This CVE is Very High Risk - more severe than 90.5% of all 348,756 vulnerabilities in our database.
#33,264
Top 10% most severe
Severity Percentile
🎯 CISA SSVC Assessment Updated: Aug 21, 2026
🔍 Exploitation Status
None
No known exploits
⚙️ Automatable
YES
Can be exploited automatically
💥 Technical Impact
Total
Complete system compromise possible
🏆 Discovered By
kiyong
SSVC data provided by
CISA
Last Modified
2026-08-21
Source
NVD 🔗
CVSS Vector 3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CWE IDs (Weakness Types)