CVE-2026-34000
🔶 mediumSummary
A flaw was found in the X.Org X server. This out-of-bounds read vulnerability in the XKB geometry processing, specifically within the `CheckSetGeom()` and `XkbAddGeomKeyAlias` functions, allows an attacker to read uninitialized or out-of-bounds memory. An attacker with a connection to the X11 server, either locally or remotely, can exploit this without user interaction. This could lead to the disclosure of memory contents or cause a denial of service by crashing the server.
CVSS Score
6.1
Medium
EPSS Score
0.0
Exploit Probability
Published Date
2026-05-05
First Seen: 2026-05-06
📊 Relative Risk Intelligence
This CVE is Lower Risk - more severe than 39.0% of all 322,079 vulnerabilities in our database.
#196,436
Below average severity
Severity Percentile
🎯 CISA SSVC Assessment Updated: May 5, 2026
🔍 Exploitation Status
None
No known exploits
⚙️ Automatable
NO
Requires human interaction
💥 Technical Impact
Partial
Limited system impact
🏆 Discovered By
Red Hat would like to thank Jan-Niklas Sohn (TrendAI Zero Day Initiative) for reporting this issue.
SSVC data provided by
CISA
Last Modified
2026-05-20
Source
NVD 🔗
CVSS Vector 3.1
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:L
CWE IDs (Weakness Types)