November 9, 2026

CVE Watchtower

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CVE-2026-2340NVD

Vulnerability Summary

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.
Severity Level
MEDIUM(6.5)
Published Date
May 27, 2026
Last Modified
Nov 6, 2026
Exploitation Status
No confirmed exploitation yet
EPSS Score (30-Day)
0.95%Probability
Root Weakness (CWE)
CWE-280: Unknown/Unlisted Weakness ↗
Refer to the official MITRE database for detailed architectural specifications regarding this weakness.
CVSS v3.1 Base Metrics — Score 6.5 (MEDIUM)
Attack VectorNetwork
Attack ComplexityLow
Privileges RequiredLow
User InteractionNone
ScopeUnchanged
ConfidentialityNone
IntegrityHigh
AvailabilityNone

Affected & Patched Versions

Affected Versions
  • Samba Samba >= 4.20.0 and < 4.22.10
  • Samba Samba >= 4.23.0 and < 4.23.8
  • Samba Samba >= 4.24.0 and < 4.24.3
  • Redhat Openshift Container Platform >= 4.12 and < 4.12.97
  • Redhat Openshift Container Platform >= 4.13 and < 4.13.71
  • Redhat Openshift Container Platform >= 4.14 and < 4.14.72
  • Redhat Openshift Container Platform >= 4.15 and < 4.15.68
  • Redhat Openshift Container Platform >= 4.16 and < 4.16.69
  • Redhat Openshift Container Platform >= 4.17 and < 4.17.57
  • Redhat Openshift Container Platform >= 4.18 and < 4.18.54
  • Redhat Openshift Container Platform >= 4.19 and < 4.19.36
  • Redhat Enterprise Linux
Patched Versions
  • Samba Samba 4.22.10
  • Samba Samba 4.23.8
  • Samba Samba 4.24.3
  • Redhat Openshift Container Platform 4.12.97
  • Redhat Openshift Container Platform 4.13.71
  • Redhat Openshift Container Platform 4.14.72
  • Redhat Openshift Container Platform 4.15.68
  • Redhat Openshift Container Platform 4.16.69
  • Redhat Openshift Container Platform 4.17.57
  • Redhat Openshift Container Platform 4.18.54
  • Redhat Openshift Container Platform 4.19.36
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🎁7-Day Free Trial — Try Pro or Team, no card required.
📧Email Delivery — Threat intel straight to your inbox.
♾️Unlimited Vendors — Track your entire stack.
🚨All New CVEs — Be the first to know.
📈EPSS Spike Alerts — Catch rising risk before it peaks.
🎯Custom EPSS/CVSS — Filter noise, focus on risk.
🛡️Exploit Intel — A 2nd confirmed-exploit signal beyond KEV.
🐙GitHub Issues — Auto-tracked, no duplicates.
📬Weekly Digest — One clean summary, not inbox spam.
🏷️Watchlist Groups — Tag alerts by team (Infra/AppSec/SOC).
💬Webhooks — Slack & Teams integration.
🔀Smart Routing — Critical alerts to one channel, rest to another.
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External References