TI-2026-84183 Aliases CVE-2026-118444 GHSA-p5f7-36qg-83fr

Out-of-bounds reads during instruction decoding in pybddisasm

LOW 21CWE-125Published 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-125 and the CVSS impact.

Summary

Out-of-bounds reads in the Bitdefender pybddisasm Python bindings through version 0.3.0 may expose adjacent process memory during instruction decoding. The nd_decode function may read up to 15 bytes beyond a short Python buffer, and nd_decode_ex, nd_decode_ex2 and nd_decode_with_context pass a caller-supplied size to the decoder without checking it against the real buffer length. Bytes read past the buffer can be returned through nd_get_instrux_bytes, so a local user with low privileges could read them if an application invokes these APIs with a short buffer or oversized length and exposes the results. The package is no longer maintained.

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

Description from the CNA

Out-of-bounds read vulnerabilities in the pybddisasm Python bindings may disclose adjacent process memory during instruction decoding. The nd_decode function may read up to 15 bytes without checking the actual length of the supplied Python buffer. The nd_decode_ex, nd_decode_ex2, and nd_decode_with_context functions pass the caller-supplied buffer size to the decoder without validating it against the actual length of the Python buffer. Data read beyond the buffer may be exposed through nd_get_instrux_bytes, which returns a fixed-length list of 16 bytes. Exploitation requires an application to invoke the affected APIs with a short buffer or an oversized length and to expose the resulting bytes to an attacker. The pybddisasm package is no longer maintained.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

No fixed version is listed for pybddisasm, and the 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-2026-118444
2026-11-03 Alias added: GHSA-p5f7-36qg-83fr
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