CVE-2026-88806
⚠️ highSummary
A malicious X server could exploit a buffer overflow in libX11 before 1.8.14 during handling of XkbGetMap overflowing the key_sym_map.
CVSS Score
7.5
High
EPSS Score
0.2
Exploit Probability
Published Date
2026-09-21
First Seen: 2026-09-24
📊 Relative Risk Intelligence
This CVE is Moderate Risk - more severe than 67.7% of all 361,609 vulnerabilities in our database.
#116,654
Above average severity
Severity Percentile
🎯 CISA SSVC Assessment Updated: Sep 21, 2026
🔍 Exploitation Status
None
No known exploits
⚙️ Automatable
NO
Requires human interaction
💥 Technical Impact
Total
Complete system compromise possible
🏆 Discovered By
Adam Bedard working with TrendAI Zero Day Initiative
Claude:claude-opus-4-6 (tool)
SSVC data provided by
CISA
Last Modified
2026-09-22
Source
NVD 🔗
CVSS Vector 3.1
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
CWE IDs (Weakness Types)