CVE-2026-89688
ZDI-26-695: Linux Kernel NFSv4 Server Race Condition Remote Code Execution Vulnerability
Published Sep 14, 2026
This vulnerability allows remote attackers to execute arbitrary code on affected installations of Linux Kernel. Authentication is required to exploit this vulnerability. Furthermore, only systems with nfsd enabled are vulnerable. The ZDI has assigned a CVSS rating of 8.5. The following CVEs are assigned: CVE-2026-89688.
Timeline
Detection, updates, and resolution for this record.
Sep 14, 2026 · Catalog
Detected
This vulnerability allows remote attackers to execute arbitrary code on affected installations of Linux Kernel. Authentication is required to exploit this vulnerability. Furthermore, only systems with nfsd enabled are vulnerable. The ZDI has assigned a CVSS rating of 8.5. The following CVEs are assigned: CVE-2026-89688.
Sources
- CVE.orgCVE-2026-89688
Official CVE identifier
cve.org - FIRST EPSSCVE-2026-89688
30-day exploitation probability 0.7%
first.org - Zero Day InitiativeZDI-26-695
This vulnerability allows remote attackers to execute arbitrary code on affected installations of Linux Kernel. Authentication is required to exploit this vulnerability. Furthermore, only systems with nfsd enabled are vulnerable. The ZDI has assigned a CVSS rating of 8.5. The following CVEs are assigned: CVE-2026-89688.
zerodayinitiative.com