TI-2026-84186 Aliases CVE-2026-118447 GHSA-qm9j-xr9g-5hqr

Uninitialized memory returned after decoding failure in pybddisasm

LOW 21CWE-457Published 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: Information disclosure
Confidentiality · integrity · availability: Low · None · None
Fix status: No fix listed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-457 and the CVSS impact.

Summary

Bitdefender pybddisasm versions from 0 through 0.3.0 are affected. The Python bindings can return an INSTRUX object with uninitialized contents after a failed instruction decode (CWE-457). A local attacker with low privileges can read residual process memory when an application exposes the returned object after a decoding failure.

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

Description from the CNA

A use of uninitialized memory vulnerability in the pybddisasm Python bindings may disclose process memory when instruction decoding fails. The nd_decode, nd_decode_ex, nd_decode_ex2, and nd_decode_with_context functions may return an INSTRUX object whose contents have not been initialized after an unsuccessful decoding operation, including failures caused by invalid parameters. Accessing members of the returned object may expose residual process memory. Exploitation requires an application to access and expose the returned object contents after a decoding failure. The pybddisasm package is no longer maintained.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 The pybddisasm package is no longer maintained.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-2026-118447
2026-11-03 Alias added: GHSA-qm9j-xr9g-5hqr
2026-11-03 CISA SSVC decision points changed

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