TI-2026-84184 Aliases CVE-2026-118445 GHSA-xm87-hrrj-pq46

Use-after-free in pybddisasm INSTRUX structure members

LOW 29CWE-416Published 2026-11-03 · Updated 2026-11-03

Key facts

Attack vector: Local
Privileges required: Low
User interaction: None
Attack complexity: Low
Attack requirements: None
Impact type: —
Confidentiality · integrity · availability: Low · None · High
Fix status: No fix listed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA.

Summary

Bitdefender pybddisasm versions through 0.3.0 are affected. A use-after-free in its Python bindings lets a retained reference to a structure-valued INSTRUX member be accessed after the parent INSTRUX object has been freed (CWE-416). A local user with low privileges can exploit this when an application accesses such a member after its parent is freed, which may expose process memory or crash the Python process.

Written with Claude Haiku 5.5 from the sources below · 2026-11-03

Description from the CNA

A use-after-free vulnerability in the pybddisasm Python bindings affects structure-valued members of INSTRUX objects. These members are exposed through Python objects that reference memory owned by the parent INSTRUX object. A retained reference to a member does not keep the parent allocation alive. Accessing the member after the parent INSTRUX object has been freed therefore accesses freed memory. Depending on how the member 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 a member reference after the parent object has been freed. The pybddisasm package is no longer maintained.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00105 1st percentileScored 2026-11-07

Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
Automatable: No
Technical impact: Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
Bitdefender	pybddisasm	up to 0.3.0	—	No fix listed	CNA

pybddisasm VendorBitdefender Affected up to 0.3.0 Fixed in — No fix listed CNA

Remediation

The sources list no fixed version for pybddisasm. The pybddisasm package is no longer maintained.

Written with Claude Haiku 5.5 from the sources below · 2026-11-03

Timeline

2026-11-03 Threatist record created from CVE-2026-118445
2026-11-03 Alias added: GHSA-xm87-hrrj-pq46
2026-11-03 CISA SSVC decision points changed
2026-11-03 Priority changed: MEDIUM → LOW

References

Other 1

https://pypi.org/project/pybddisasm/

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Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences