CVE•Published 2026-04-23•Modified 2026-06-08•0 articles on news•6 live references•NVD data
CVE-2026-34001
Vulnerability data via NVD (ingested)
CVSS v3.1
7.8
HIGH
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS percentile
0
Exploit Prediction Scoring System · top 100% of all CVEs
Weaknesses (CWE)
Description
A flaw was found in the X.Org X server. This use-after-free vulnerability occurs in the XSYNC fence triggering logic, specifically within the miSyncTriggerFence() function. An attacker with access to the X11 server can exploit this without user interaction, leading to a server crash and potentially enabling memory corruption. This could result in a denial of service or further compromise of the system.
Timeline
Published 2026-04-23
Modified 2026-06-08
External references
Search for exposed instances
Shodan + Censys queries derived from NVD's CPE data. The vuln tag catches assets Shodan has explicitly linked to this CVE; the product / banner fingerprints find exposed instances even when the vuln tag was never applied (which is common).
More intel sources (5)
Shodan report
vuln:CVE-2026-34001Country / ASN / product breakdown for the vuln query.
Censys
vulnerabilities.cve_id: CVE-2026-34001Censys host search filtered to this CVE id.
grep.app
CVE-2026-34001Public source-code mentions — fast PoC discovery.
GitHub code
CVE-2026-34001GitHub code search for direct mentions.
Google dork
"CVE-2026-34001" exploit -site:nvd.nist.govWrite-ups and news, NVD excluded.
Known PoCs on GitHub
No public proof-of-concept repositories found for CVE-2026-34001 on GitHub.
We haven't classified any articles referencing CVE-2026-34001 yet. The external references above still apply.