CVE-2026-68431
ZDI-26-573: Linux Kernel KSMBD Response Header Out-Of-Bounds Read Information Disclosure Vulnerability
Published Aug 13, 2026
This vulnerability allows remote attackers to disclose sensitive information on affected installations of Linux Kernel KSMBD. Authentication is not required to exploit this vulnerability. However, only systems with ksmbd enabled are vulnerable. The ZDI has assigned a CVSS rating of 9.3. The following CVEs are assigned: CVE-2026-68431.
Timeline
Detection, updates, and resolution for this record.
Aug 13, 2026 · Catalog
Detected
This vulnerability allows remote attackers to disclose sensitive information on affected installations of Linux Kernel KSMBD. Authentication is not required to exploit this vulnerability. However, only systems with ksmbd enabled are vulnerable. The ZDI has assigned a CVSS rating of 9.3. The following CVEs are assigned: CVE-2026-68431.
Sources
- CVE.orgCVE-2026-68431
Official CVE identifier
cve.org - FIRST EPSSCVE-2026-68431
30-day exploitation probability 0.5%
first.org - Zero Day InitiativeZDI-26-573
This vulnerability allows remote attackers to disclose sensitive information on affected installations of Linux Kernel KSMBD. Authentication is not required to exploit this vulnerability. However, only systems with ksmbd enabled are vulnerable. The ZDI has assigned a CVSS rating of 9.3. The following CVEs are assigned: CVE-2026-68431.
zerodayinitiative.com