CVE-2026-2340

MEDIUM
MEDIUM Priority: 0.06 BB Relevance: 63/100
Published: 2026-05-27 Modified: 2026-11-06 First seen: 2026-11-05 Status: active

Attack Surface

Network Low Complexity No Interaction Integ. Impact

CVSS Vector Breakdown

AV: Network
AC: Low
PR: Low
UI: None
S: Unchanged
C: None
I: High
A: None

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.

References & Advisories (27)

https://access.redhat.com/errata/RHSA-2026:22644
vendor-advisory x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:22963
vendor-advisory x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:25049
vendor-advisory x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:25979
vendor-advisory x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:28053
vendor-advisory x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:28054
vendor-advisory x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:28055
vendor-advisory x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:28056
vendor-advisory x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:28057
vendor-advisory x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:29863
vendor-advisory x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:56786
vendor-advisory x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:56853
vendor-advisory x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:56911
vendor-advisory x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:57483
vendor-advisory x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:59831
vendor-advisory x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:60019
vendor-advisory x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:62409
vendor-advisory x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:62549
vendor-advisory x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:65839
vendor-advisory x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:65851
vendor-advisory x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:65907
vendor-advisory x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:67857
vendor-advisory x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:70586
vendor-advisory x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:77320
vendor-advisory x_refsource_REDHAT
Showing 25 of 27 references

Bug Bounty Relevance

63 / 100
✓ Network accessible
✓ Low complexity
✓ No user interaction

CVSS Score

6.5 / 10.0 v3.1
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N

EPSS — Exploitation Probability

0.95%
Raw Score 0.009470
Percentile 61.7%
Date 2026-11-14

EPSS Trend

2026-11-14
0.00947
2026-11-13
0.00947
2026-11-12
0.00947
2026-11-10
0.00947
2026-11-09
0.00947
2026-11-08
0.00947
2026-11-07
0.00947
2026-11-06
0.00939
2026-11-05
0.00939

Intelligence Sources

mitre ref →
nvd ref →