Exploited CVEs / Linux / CVE-2018-14634
CVE-2018-14634
Linux Kernel Integer Overflow Vulnerability. Exploitation in the wild is confirmed by CISA, not predicted. Federal agencies were required to remediate by 2026-02-16 (that deadline has passed); treat that date as the outer bound for your own environment. Check the vendor security advisory for the fix.
Actively exploited Linux Kernel vulnerability, High severity, CVSS 7.8. Added to the CISA KEV catalog 2026-01-26.
Risk summary
Updated July 26, 2026. Data refreshed on every build from MSRC, CISA KEV, and FIRST EPSS.
Senserva AI Opinion for CVE-2018-14634
CISA added this Linux kernel integer overflow to the KEV list in January 2026, seven-plus years after disclosure, which means the Mutagen Astronomy privilege escalation is being used in live intrusions right now. A local user who can invoke a SUID binary can overflow create_elf_tables() and become root, so it converts any web shell or stolen SSH account on an unpatched 64-bit server into full system control. Long-lived enterprise Linux servers that missed 2018 kernel updates are the exposed population.
Do this: Check kernel versions on older Linux servers, prioritizing internet-facing ones, and apply vendor kernel updates that fix create_elf_tables().
AI-generated from public data, 2026-07-07. Verify against the vendor advisory before acting.
Senserva AI Opinion and rich prompt for CVE-2018-14634
Copy this prompt into Claude, ChatGPT, or Copilot. The facts are included, sourced from this page.
Full tracking and change history for CVE-2018-14634
Published and last-revised dates are authoritative, from Microsoft MSRC (or the CISA KEV date-added). Senserva additionally records day-to-day changes from 2026-07-07, refreshed several times a day; the change count reflects that forward-only tracking.
CISA required action
Federal (BOD 22-01) remediation due date: 2026-02-16 (past due).
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
Official fix for CVE-2018-14634
Check the vendor's security advisory channel for the patched Kernel versions and workarounds.
Common questions about CVE-2018-14634
Is CVE-2018-14634 actively exploited?
Yes. CVE-2018-14634 was added to the CISA Known Exploited Vulnerabilities (KEV) catalog on 2026-01-26, which means exploitation in the wild has been confirmed, not predicted. Its EPSS 30-day exploitation probability is 15%.
What is the CISA deadline and required action for CVE-2018-14634?
CISA set the federal (BOD 22-01) remediation due date at 2026-02-16, which has passed; treat any unremediated system as overdue. The verbatim required action: Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
What fixes CVE-2018-14634?
Check the vendor's security advisory for the patched Kernel versions and any workarounds. KEV listing makes this a fix-first item: patch it ahead of higher-CVSS issues nobody is exploiting.
Can I ask my own AI about CVE-2018-14634?
Yes. This page includes a free, ready-to-paste AI prompt containing CVE-2018-14634's key facts: severity, CVSS, EPSS, the KEV date, the CISA due date, and the required action. Copy it into Claude, ChatGPT, or Copilot; the data is refreshed twice a day (5 AM and 3 PM US Central).
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Authoritative references
Every actively exploited CVE, searchable with due dates and CSV export: the exploited-CVE tracker. The newest additions: exploited this week.
