Vulnerability · Published Nov 3, 2026 · Assigned by Bitdefender
CVE-2026-118444Out-of-bounds reads during instruction decoding in pybddisasm
Medium 4.8
In plain English
A medium-severity out-of-bounds read 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
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 The pybddisasm package is no longer maintained.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu:22.04:LTS | python3.10 | no fix listed | UBUNTU-CVE-2026-118444 |
| Ubuntu:24.04:LTS | python3.12 | no fix listed | UBUNTU-CVE-2026-118444 |
| Ubuntu:26.04:LTS | python3.14 | no fix listed | UBUNTU-CVE-2026-118444 |
| Ubuntu:26.10 | python3.14 | no fix listed | UBUNTU-CVE-2026-118444 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Bitdefender | pybddisasm | 0 – through 0.3.0 |
Weakness: CWE-125 · Vector: 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