PT-2026-43437 · Samba+2 · Samba+2

Osidb Bzimport · Published 2026-05-26 · Updated 2026-05-28 · CVE-2026-2340

Positive Technologies (AI Summary)

CVSS v2.0

7.5

High

Base vector

AV:N/AC:L/Au:N/C:P/I:P/A:P

Name of the Vulnerable Software and Affected Versions Samba (affected versions not specified)

Description A flaw exists in the vfs worm module, which is designed to provide write-once, read-many (WORM) protections by preventing file modifications after a specific grace period. Due to insufficient validation during rename operations, an authenticated user with write access to a share can overwrite a protected file by renaming a newly created file over the existing WORM-protected file.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Weakness Enumeration

CWE-280

Related Identifiers

BDU:2026-07421

CVE-2026-2340

OPENSUSE-SU-2026:10884-1

USN-8306-1

Affected Products

Linuxmint

Samba

Ubuntu

References · 28

• https://ubuntu.com/security/CVE-2026-3012 · Vendor Advisory
• https://osv.dev/vulnerability/openSUSE-SU-2026:10884-1 · Vendor Advisory
• https://ubuntu.com/security/CVE-2026-2340 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2026-2340 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-2340 · Security Note
• https://ubuntu.com/security/CVE-2026-1933 · Vendor Advisory
• https://ubuntu.com/security/notices/USN-8306-1 · Vendor Advisory
• https://bugzilla.samba.org/show_bug.cgi?id=15997 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2026-2340 · Security Note
• https://bdu.fstec.ru/vul/2026-07421 · Security Note
• https://osv.dev/vulnerability/UBUNTU-CVE-2026-2340 · Vendor Advisory
• https://ubuntu.com/security/CVE-2026-3238 · Vendor Advisory
• https://ubuntu.com/security/CVE-2026-4480 · Vendor Advisory
• https://osv.dev/vulnerability/USN-8306-1 · Vendor Advisory
• https://ubuntu.com/security/CVE-2026-4408 · Vendor Advisory