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

Quick assessment

Affected
Bitdefender pybddisasm
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

pybddisasm Python 绑定中存在一个未初始化内存使用漏洞，影响 函数。当底层文本转换失败时（包括由无效参数导致的失败），输出缓冲区可能仍处于未初始化状态，但仍会被转换为 Python 返回值。这可能导致残留的进程内存被泄露，或造成 Python 进程崩溃。利用该漏洞需要应用程序以某种方式调用 ，使其转换失败并返回或进一步使用该输出结果。需要注意的是，pybddisasm 软件包已不再维护。

CVSS 6.9 · Medium

Possible ATT&CK Techniques 1 AI

T1069.002 · Domain Groups
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I. Basic Information for CVE-2026-118448

Vulnerability Information
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Vulnerability Title
Uninitialized output buffer returned after nd_to_text failure in pybddisasm
Source: CVE Program / CVE List V5
Vulnerability Description
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 The pybddisasm package is no longer maintained.
Source: CVE Program / CVE List V5
CVSS Information
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: CVE Program / CVE List V5
Vulnerability Type
使用未经初始化的变量
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
Bitdefender pybddisasm 0 ~ 0.3.0 -

II. Public POCs for CVE-2026-118448

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III. Intelligence Information for CVE-2026-118448

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Other References for CVE-2026-118448 (1)

Same Patch Batch · Bitdefender · 2026-11-03 · 5 CVEs total

CVE-2026-118446 6.9 MEDIUM Use-after-free in INSTRUX array members in pybddisasm
CVE-2026-118445 6.9 MEDIUM Use-after-free in INSTRUX structure members in pybddisasm
CVE-2026-118444 4.8 MEDIUM Out-of-bounds reads during instruction decoding in pybddisasm
CVE-2026-118447 4.8 MEDIUM Uninitialized INSTRUX contents returned after decoding failure in pybddisasm

IV. Related Vulnerabilities

Same product: pybddisasm
Same vendor: Bitdefender
Same weakness: CWE-457