CVE-2026-118444: medium-severity vulnerability in Bitdefender pybddisasm
Out-of-bounds reads during instruction decoding in pybddisasm
Published
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13Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 4.8epss 0.1%
Out-of-bounds read vulnerabilities in the pybddisasm Python bindings may disclose adjacent process memory during instruction decoding. The nd_decode function may read up to 15 bytes without checking the actual length of the supplied Python buffer. The nd_decode_ex, nd_decode_ex2, and nd_decode_with_context functions pass the caller-supplied buffer size to the decoder without validating it against the actual length of the Python buffer. Data read beyond the buffer may be exposed through nd_get_instrux_bytes, which returns a fixed-length list of 16 bytes. Exploitation requires an application to invoke the affected APIs with a short buffer or an oversized length and to expose the resulting bytes to an attacker. The pybddisasm package is no longer maintained.
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
Affected products
Bitdefender · pybddisasmRelated CVEs — Bitdefender pybddisasm
In the same product, most dangerous first.
CVE-2026-118448MEDIUMUninitialized output buffer returned after nd_to_text failure in pybddisasmEPSS 0.1%CVE-2026-118447MEDIUMUninitialized INSTRUX contents returned after decoding failure in pybddisasmEPSS 0.1%CVE-2026-118446MEDIUMUse-after-free in INSTRUX array members in pybddisasmEPSS 0.1%CVE-2026-118445MEDIUMUse-after-free in INSTRUX structure members in pybddisasmEPSS 0.1%
References
https://pypi.org/project/pybddisasm/