Description
Fortra BoKS Manager contains an out-of-bounds read vulnerability in the custom TLS ClientHello parser used by boks_portmux. A remote unauthenticated attacker can submit a malformed ClientHello and terminate boks_portmux. Although the daemon is normally restarted automatically, repeated requests can sustain the service interruption.
Published: 2026-10-01
Score: 7.5 High
EPSS: n/a
KEV: No
AI Analysis

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Remediation

Vendor Solution

Upgrade to boks-server 8.1.0.24 or boks-server 9.0.0.7.


Vendor Workaround

Until a fixed release is installed, restrict network access to boks_portmux listeners to trusted systems.

Tracking

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Advisories

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History

Thu, 01 Oct 2026 20:00:00 +0000

Type Values Removed Values Added
First Time appeared Fortra
Fortra boks Manager
Vendors & Products Fortra
Fortra boks Manager

Thu, 01 Oct 2026 15:30:00 +0000

Type Values Removed Values Added
Description Fortra BoKS Manager contains an out-of-bounds read vulnerability in the custom TLS ClientHello parser used by boks_portmux. A remote unauthenticated attacker can submit a malformed ClientHello and terminate boks_portmux. Although the daemon is normally restarted automatically, repeated requests can sustain the service interruption.
Title Fortra BoKS Manager boks_portmux TLS ClientHello out-of-bounds read vulnerability
Weaknesses CWE-125
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'}


Subscriptions

Fortra Boks Manager
cve-icon MITRE

Status: PUBLISHED

Assigner: Fortra

Published:

Updated: 2026-10-01T16:02:49.186Z

Reserved: 2026-08-25T14:50:07.493Z

Link: CVE-2026-79896

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-10-01T16:17:59.940

Modified: 2026-10-01T20:34:26.287

Link: CVE-2026-79896

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-10-01T19:33:49Z

Weaknesses