Fortra BoKS Manager boks_portmux TLS ClientHello out-of-bounds read vulnerability

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-79896
StatePUBLISHED
AssignerFortra
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-10-01 16:17:59 UTC
Updated2026-10-01 20:34:26 UTC
DescriptionFortra 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.

Risk And Classification

Primary CVSS: v3.1 7.5 HIGH from df4dee71-de3a-4139-9588-11b62fe6c0ff

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

Problem Types: CWE-125 | CWE-125 CWE-125 Out-of-bounds read

VersionSourceTypeScoreSeverityVector
3.1df4dee71-de3a-4139-9588-11b62fe6c0ffSecondary7.5HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
3.1CNACVSS7.5HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High

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

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Fortra BoKS Manager affected 8.1.0.0 8.1.0.23 custom Not specified
CNA Fortra BoKS Manager affected 9.0.0.0 9.0.0.6 custom Not specified

References

ReferenceSourceLinkTags
www.fortra.com/security/advisories/product-security/fi-2026-016 df4dee71-de3a-4139-9588-11b62fe6c0ff www.fortra.com
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Additional Advisory Data

Solutions

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

Workarounds

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

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