CVE-2026-118444

Out-of-bounds reads during instruction decoding in pybddisasm

Published Nov 3, 2026 CVSS 4.0 · 4.8 Medium EPSS < 1% KEV · Not listed
Description
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 The pybddisasm package is no longer maintained.

Remediation

Vendor Solution

Discontinue use of the unmaintained pybddisasm package. No fixed release will become available..

Tracking

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Advisories

No advisories available
References
History
Type Values Removed Values Added
Metrics ssvc

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

Type Values Removed Values Added
First Time appeared Bitdefender
Bitdefender pybddisasm
Vendors & Products Bitdefender
Bitdefender pybddisasm
Type Values Removed Values Added
Description 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 The pybddisasm package is no longer maintained.
Title Out-of-bounds reads during instruction decoding in pybddisasm
Weaknesses CWE-125
References
Metrics cvssV4_0

{'score': 4.8, 'vector': 'CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
Bitdefender
Published
Updated
Nov 3, 2026, 6:32 PM
Reserved
Oct 28, 2026, 8:25 AM
Status
Awaiting Analysis
Published
Nov 3, 2026, 9:17 AM
Modified
Nov 3, 2026, 7:17 PM