Description
HFS2 version 2.4.0 and earlier contains a denial of service vulnerability that allows unauthenticated attackers to cause a complete and persistent loss of availability by sending a single crafted request. Attackers can trigger a hung serving thread that enters a busy loop, rendering the entire file server unresponsive to all clients without self-recovery until an operator manually restarts the service.
Published: 2026-09-24
Score: 8.7 High
EPSS: n/a
KEV: No
Impact: n/a
Action: n/a
AI Analysis

No analysis available yet.

Remediation

No remediation available yet.

Tracking

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Advisories

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History

Thu, 24 Sep 2026 16:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Thu, 24 Sep 2026 15:00:00 +0000

Type Values Removed Values Added
Description HFS2 version 2.4.0 and earlier contains a denial of service vulnerability that allows unauthenticated attackers to cause a complete and persistent loss of availability by sending a single crafted request. Attackers can trigger a hung serving thread that enters a busy loop, rendering the entire file server unresponsive to all clients without self-recovery until an operator manually restarts the service.
Title HFS2 2.4.0 Unauthenticated Denial of Service via Hung Serving Thread
First Time appeared Rejetto
Rejetto hfs2
Weaknesses CWE-835
CPEs cpe:2.3:a:rejetto:hfs2:*:*:*:*:*:*:*:*
Vendors & Products Rejetto
Rejetto hfs2
References
Metrics cvssV3_1

{'score': 7.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'}

cvssV4_0

{'score': 8.7, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N'}

Subscriptions

Rejetto Hfs2
cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published:

Updated: 2026-09-24T15:47:35.811Z

Reserved: 2026-09-24T13:33:30.061Z

Link: CVE-2026-97362

cve-icon Vulnrichment

Updated: 2026-09-24T15:46:09.398Z

cve-icon NVD

Status : Received

Published: 2026-09-24T15:18:01.393

Modified: 2026-09-24T16:17:29.420

Link: CVE-2026-97362

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses
  • CWE-835

    Loop with Unreachable Exit Condition ('Infinite Loop')