CVE-2026-116499
Arbitrary Code Execution in Qiskit SDK QPY Deserialization
IBM Qiskit SDK 1.4.2 through 2.6.2 could allow a local attacker to execute arbitrary code due to deserialization of untrusted data.
Fixes and workarounds
Fix
Remediation/Fixes guidance: The issue is addressed in Qiskit versions v2.6.2. This version is patched to no longer use SymPy internally during deserialization of payloads using QPY format versions < 13. Product(s)Version(s) number and/or range Remediation/Fix/Instructions< Qiskit SDK https://github.com/qiskit/qiskit - qiskit.qpy.load() function>v2.6.2 Upgrade to the patched versions: qiskit v2.6.2.
Source: CNA: ibmFix
The reporting source identifies this reference as a patch. Check the advisory for affected versions and supported release branches.
Source: CNA: ibmAffected products and versions
| Product | Versions | Authority |
|---|---|---|
| Qiskit SDK IBM |
≥ 1.4.2; ≤ 2.6.2 (affected, semver) | CNA: ibm |
Version ranges are source assertions. Check the vendor advisory and your installed configuration before determining exposure.
CVSS assessments
| Version / score | Vector | Authority |
|---|---|---|
| 3.1 / 8.4 high |
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H | CNA: ibm |
| 3.1 / 8.4 high |
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H | NVD: [email protected] |
Exploit evidence
No exploit evidence in collected sources. This is not proof of no exploitation.
References
- https://www.ibm.com/support/pages/node/7295238CNA: ibm · vendor-advisory, patch
- https://www.ibm.com/support/pages/node/7295238[email protected]
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