CVE-2026-118447 PUBLISHED

Uninitialized INSTRUX contents returned after decoding failure in pybddisasm

Assigner: Bitdefender
Reserved: 28.10.2026 Published: 03.11.2026 Updated: 03.11.2026

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 The pybddisasm package is no longer maintained.

Metrics

CVSS 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
CVSS Score: 4.8

Product Status

Vendor Bitdefender
Product pybddisasm
Versions Default: unknown
  • affected from 0 to 0.3.0 (incl.)

Solutions

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

References

Problem Types

  • CWE-457: Use of Uninitialized Variable CWE