CVE-2026-19795 — MEDIUM (6.2)

Vulnerability Description

Qiskit could allow a local attacker to cause a denial of service due to a stack overflow during deserialization of QPY payloads. A malicious QPY payload can trigger a segmentation fault, causing the application to crash when deserializing untrusted input.

CVSS Score

6.2

MEDIUM

CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

NONE

Integrity

NONE

Availability

HIGH

Related Weaknesses (CWE)

CWE-502

References

https://www.ibm.com/support/pages/node/7285932

FAQ

What is CVE-2026-19795?

CVE-2026-19795 is a vulnerability with a CVSS score of 6.2 (MEDIUM). Qiskit could allow a local attacker to cause a denial of service due to a stack overflow during deserialization of QPY payloads. A malicious QPY payload can trigger a segmentation fault, causing the a...

How severe is CVE-2026-19795?

CVE-2026-19795 has been rated MEDIUM with a CVSS base score of 6.2/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2026-19795?

Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.