CVE-2026-2340

medium

Published 2026-05-27 · Modified 2026-05-27

CVSS v3

6.5

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N

CVSS v2

—

VIR risk

6.5

Description

A flaw was found in Samba’s vfs_worm module. The module is intended to provide write-once, read-many (WORM) protections by preventing modification of files after a configurable grace period. Due to insufficient validation during rename operations, an authenticated user with write access to a share could overwrite a protected file by renaming a newly created file over the existing WORM-protected file.

Predictions

Exploit likelihood

75%

Patch ETA

—

Heuristic predictions, AS-IS, for prioritization only.

Mitigations

vendor Authored 2026-05-27

Vendor advisory: debian — https://security-tracker.debian.org/tracker/CVE-2026-2340

vendor Authored 2026-05-27

Vendor advisory: suse — https://www.suse.com/security/cve/CVE-2026-2340.html

OS impact

OS	Version	Status	Fixed in
sles		affected
debian	bookworm	fixed	`2:4.17.12+dfsg-0+deb12u4`
debian	bullseye	affected
debian	forky	affected
debian	sid	fixed	`2:4.24.3+dfsg-1`
debian	trixie	fixed	`2:4.22.8+dfsg-0+deb13u2`

References

CWEs

CWE-280

Verify integrity in audit chain (admin only). AS-IS.