CVE-2026-4870 — HIGH (7.5) — White Hats Nepal

Q: What is CVE-2026-4870?

CVE-2026-4870 is a vulnerability with a CVSS score of 7.5 (HIGH). IBM Qiskit SDK 0.43.0 through 2.5.0 could allow an attacker to trigger a segmentation fault leading to a denial of service due to uncontrolled recursion in the parser.

Q: How severe is CVE-2026-4870?

CVE-2026-4870 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.

Q: Is there a patch for CVE-2026-4870?

Check the references section above for vendor advisories and patch information. Affected products include: Ibm Qiskit Software Development Kit.

Vulnerability Description

IBM Qiskit SDK 0.43.0 through 2.5.0 could allow an attacker to trigger a segmentation fault leading to a denial of service due to uncontrolled recursion in the parser.

CVSS Score

7.5

HIGH

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

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

NONE

Integrity

NONE

Availability

HIGH

Affected Products

Vendor	Product	Versions
Ibm	Qiskit Software Development Kit	>= 0.43.0, < 1.4.6

Related Weaknesses (CWE)

CWE-674

References

https://www.ibm.com/support/pages/node/7276123Vendor Advisory

FAQ

What is CVE-2026-4870?

CVE-2026-4870 is a vulnerability with a CVSS score of 7.5 (HIGH). IBM Qiskit SDK 0.43.0 through 2.5.0 could allow an attacker to trigger a segmentation fault leading to a denial of service due to uncontrolled recursion in the parser.

How severe is CVE-2026-4870?

CVE-2026-4870 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2026-4870?

Check the references section above for vendor advisories and patch information. Affected products include: Ibm Qiskit Software Development Kit.