Vulnerability · Published Nov 3, 2026 · Assigned by Bitdefender
CVE-2026-118446Use-after-free in INSTRUX array members in pybddisasm
Medium 6.9
In plain English
A medium-severity use-after-free in pybddisasm from Bitdefender. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.1% (higher than 1% of all known vulnerabilities).
Official description
A use-after-free vulnerability in the pybddisasm Python bindings affects array-valued members of INSTRUX objects, including ND_OPERAND arrays. These arrays are exposed as Python lists whose elements reference memory owned by the parent INSTRUX object. Retaining a list or an element does not keep the parent allocation alive. Accessing an element after the parent INSTRUX object has been freed therefore accesses freed memory. Depending on how the element is used and whether the freed allocation has been reused, this may expose process memory or cause the Python process to crash. Exploitation requires an application to retain and subsequently access an array element after the parent object has been freed. The pybddisasm package is no longer maintained.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Bitdefender | pybddisasm | 0 – through 0.3.0 |
Weakness: CWE-416 · Vector: 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