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CVE-2026-118447

Uninitialized INSTRUX contents returned after decoding failure in pybddisasm

Products / packages Bitdefender pybddisasm

Published

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Unsupported when assigned

Bitdefender marked the affected products as already unsupported when this CVE was assigned. A patch may not be available. Review the vendor references for migration or mitigation guidance.

This tag describes support at assignment time, not current support for every related product.

Severity and exploitation

Not in CISA KEV

KEV coverage does not rule out exploitation.

KEV checked 15/11/2026, 01:40:32 UTC
Bitdefender · CVSS:4.0 · 4.8
Assessment vectorCVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N

Severity

medium4.8

CVSS measures technical severity, not the likelihood of an attack.

Known exploitation

Not listed in the checked CISA KEV catalog

Absence from CISA KEV does not rule out attacks.

Public exploit

Not established by this record

Missing evidence does not mean no public exploit exists.

Remediation

Source guidance available

Review the recorded instructions. Guidance may be a workaround rather than a fixed version.

What this means

The pybddisasm package, version 0.3.0 or lower, has a use of uninitialized memory vulnerability, potentially disclosing process memory when instruction decoding fails. Exploitation requires an application to access the returned object contents after a decoding failure. The package is no longer maintained.

Summarized by @cf/meta/llama-3.3-70b-instruct-fp8-fast. Verify details against the original sources.

Attack conditions

Exploitation requires an application to access and expose the returned object contents after a decoding failure.

Excerpt from the original source description below.

Review supporting sources →

Affected versions

Check the exact model, release, and any platform requirements against your installation.

Bitdefender · Bitdefender

pybddisasm

1 range
Bitdefender version evidence

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affected

0 → through 0.3.0

python versions

unaffected

unknown

Other versions: unknown

Automatic dependency matching is unavailable for this record. Use the product evidence and publisher’s instructions to check your installation.

What to do

Compare your installed product and version with the affected versions above. A matching product name alone does not confirm exposure.

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

Bitdefender guidance ↗

cve.new guidance unless attributed to a publisher. This page does not inspect your installation.

Public exploit evidence

No public exploit reference is identified in the imported evidence. This is not a claim that no exploit exists.

Original source description

Read the full publisher description

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.

References

1 sources
pypi.org/project/pybddisasm/
Source referenceBitdefender

Inside the record

Evidence available

Package identity · not supplied
Version evidence
Remediation guidance
Weakness classification
Additional publishers

Describes the evidence in this view, not whether the product is safe.

Original records

CVE-2026-118447

View the latest unmodified CVE JSON from the official source. It may be newer than this imported page.

cve.new JSON →

Underlying weaknesses

The source’s classification of what caused the vulnerability.

CWE-457 ↗

CWE-457: Use of Uninitialized Variable

Bitdefender

Related →
Contributing organizations · 2
Bitdefender

Assigning organization

2026-11-03
CISA-ADP

Additional data publisher

2026-11-03

Timeline

All times UTC

  1. Advisory published

    Publication date supplied by the source.

  2. Source updated

    Latest modification date supplied by the source.

  3. Last imported by cve.new

    Latest catalog import, not the date we first saw this advisory.

What changed

Follow changes
  1. CVE · CVE-2026-118447

    Observed 2026-11-03T18:52:35.234Z · upstream updated 2026-11-03T18:32:24.225Z

    Prioritization updated

    before

    []

    after

    [
  {
    "source": "CISA-ADP",
    "type": "SSVC",
    "role": "CISA Coordinator",
    "timestamp": "2026-11-03T17:23:50.394004Z",
    "decisions": [
      {
        "name": "Exploitation",
        "value": "none"
      },
      {
        "name": "Automatable",
        "value": "no"
      },
      {
        "name": "Technical Impact",
        "value": "partial"
      }
    ]
  }
]

Large field values are marked as truncated previews. Original source snapshots remain retained.

Showing up to 50 most recent observed changes.