A use-after-free vulnerability in the pybddisasm Python bindings affects array-valued members of INSTRUX objects, including ND_OPERAND arrays. These arrays are exposed as Python lists whose elements reference memory owned by the parent INSTRUX object. Retaining a list or an element does not keep the parent allocation alive. Accessing an element after the parent INSTRUX object has been freed therefore accesses freed memory. Depending on how the element is used and whether the freed allocation has been reused, this may expose process memory or cause the Python process to crash. Exploitation requires an application to retain and subsequently access an array element after the parent object has been freed. The pybddisasm package is no longer maintained.
Advisories

No advisories yet.

Fixes

Solution

Discontinue use of the unmaintained pybddisasm package. No fixed release has been identified for this draft.


Workaround

No workaround given by the vendor.

References
History

Tue, 03 Nov 2026 19:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Tue, 03 Nov 2026 17:00:00 +0000

Type Values Removed Values Added
First Time appeared Bitdefender
Bitdefender pybddisasm
Vendors & Products Bitdefender
Bitdefender pybddisasm

Tue, 03 Nov 2026 09:15:00 +0000

Type Values Removed Values Added
Description A use-after-free vulnerability in the pybddisasm Python bindings affects array-valued members of INSTRUX objects, including ND_OPERAND arrays. These arrays are exposed as Python lists whose elements reference memory owned by the parent INSTRUX object. Retaining a list or an element does not keep the parent allocation alive. Accessing an element after the parent INSTRUX object has been freed therefore accesses freed memory. Depending on how the element is used and whether the freed allocation has been reused, this may expose process memory or cause the Python process to crash. Exploitation requires an application to retain and subsequently access an array element after the parent object has been freed. The pybddisasm package is no longer maintained.
Title Use-after-free in INSTRUX array members in pybddisasm
Weaknesses CWE-416
References
Metrics cvssV4_0

{'score': 6.9, 'vector': 'CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N'}


Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: Bitdefender

Published:

Updated: 2026-11-03T18:32:30.163Z

Reserved: 2026-10-28T08:25:09.716Z

Link: CVE-2026-118446

cve-icon Vulnrichment

Updated: 2026-11-03T17:23:59.832Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-11-03T09:17:11.250

Modified: 2026-11-03T19:17:55.057

Link: CVE-2026-118446

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-11-03T16:24:07Z

Weaknesses