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TI-2026-04245 Aliases CVE-2026-4870

Uncontrolled recursion in IBM Qiskit SDK

Priority LOW 38CWE-674Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Denial of service
Confidentiality · integrity · availability
None · None · High
Fix status
No fix listed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-674.

Summary

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00268 19th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
Yes
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
IBMQiskit SDK0.43.0 – 2.5.0—No fix listedCNA
  • Qiskit SDK VendorIBM Affected 0.43.0 – 2.5.0 Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:ibm:qiskit_software_development_kit:*:*:*:*:*:*:*:*0.43.0 to before 1.4.6; 2.0.0 to before 2.4.2VulnerableIBM
  • cpe:2.3:a:ibm:qiskit_software_development_kit:*:*:*:*:*:*:*:* Versions 0.43.0 to before 1.4.6; 2.0.0 to before 2.4.2 Vulnerable ·IBM

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-4870

References

Patch 1

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences