# CVE-2026-118448: Uninitialized output buffer returned after nd_to_text failure in pybddisasm

Status: published. Published: 2026-11-03. Updated: 2026-11-03.

A use of uninitialized memory vulnerability in the pybddisasm Python bindings affects nd_to_text. If the underlying text conversion fails, including failures caused by invalid parameters, the output buffer may remain uninitialized while still being converted into a Python return value. This may disclose residual process memory or cause the Python process to crash. Exploitation requires an application to invoke nd_to_text in a way that causes conversion to fail and to return or otherwise use the resulting output. The pybddisasm package is no longer maintained.

## Remediation

- fix: Discontinue use of the unmaintained pybddisasm package. No fixed release will become available. (source: CNA: Bitdefender)

## Affected products and versions

- Bitdefender / pybddisasm (pybddisasm): ≥ 0; ≤ 0.3.0 (affected, python). Source: CNA: Bitdefender

## Severity and prioritization

- CVSS 4.0: 6.9 (medium); CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N; source: CNA: Bitdefender

- CVSS 4.0: 6.9 (medium); CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X; source: NVD: cve-requests@bitdefender.com

- CISA KEV: No listing in collected sources

- EPSS: Not available

- SSVC: Not available

- Weaknesses: CWE-457

## Exploit evidence

No exploit evidence in collected sources. This is not proof of no exploitation.

## References

- https://pypi.org/project/pybddisasm/ (CNA: Bitdefender)

- https://pypi.org/project/pybddisasm/ (cve-requests@bitdefender.com)

## Provenance

- CNA: Bitdefender: https://www.cve.org/CVERecord?id=CVE-2026-118448; retrieved 2026-11-03; source updated 2026-11-03

- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-118448; retrieved 2026-11-03; source updated 2026-11-03

Revision: 17740d2115eb5e5d764823a1848b78505ed6d14843ff823b2d33e01637bd83a9

Canonical: https://y2.dev/cve/CVE-2026-118448

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