CVE-2026-19795: CWE-502 Deserialization of Untrusted Data in IBM Qiskit SDK
IBM Qiskit SDK 2.1.0 through 2.5.1 could allow a local attacker to cause a denial of service due to improper handling of a specially crafted object during deserialization. A malicious QPY payload can trigger a segmentation fault, causing the application to crash when deserializing untrusted input.
CVE-2026-19795: CWE-502 Deserialization of Untrusted Data in IBM Qiskit SDK
Description
IBM Qiskit SDK 2.1.0 through 2.5.1 could allow a local attacker to cause a denial of service due to improper handling of a specially crafted object during deserialization. A malicious QPY payload can trigger a segmentation fault, causing the application to crash when deserializing untrusted input.
CVSS v3.1
Score 6.2medium
Affected software
cpe:2.3:a:ibm:qiskit_sdk:2.1.0:*:*:*:*:*:*:*cpe:2.3:a:ibm:qiskit_sdk:2.5.1:*:*:*:*:*:*:*Weaknesses
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- ibm
- Date Reserved
- 2026-08-13T19:40:18.000Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a99d38facd9273b496689a7
Added to database: 09/03/2026, 20:07:43 UTC
Last updated: 09/03/2026, 20:56:33 UTC
Views: 5
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