Vulnerability-Lookup

CVE-2026-19795 (GCVE-0-2026-19795)

Vulnerability from cvelistv5 – Published: 2026-09-03 19:56 – Updated: 2026-09-04 20:05

Title

Qiskit SDK is vulnerable when deserializing QPY Files and may overflow the available stack space.

Summary

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.

Severity

6.2 (Medium)


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

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-09-04 13:26 UTC

CWE

CWE-502 - Deserialization of Untrusted Data

Assigner

ibm mitre root

References

1 reference

URL	Tags
https://www.ibm.com/support/pages/node/7285932	vendor-advisorypatch

Impacted products

1 product

Vendor	Product	Version	CPE status
IBM	Qiskit SDK	Affected: 2.1.0 , ≤ 2.5.1 (semver) cpe:2.3:a:ibm:qiskit_sdk:2.1.0:::::::* cpe:2.3:a:ibm:qiskit_sdk:2.5.1:::::::*

Credits

Issue discovered by Matthew Treinish (IBM) and Takashi Imamichi (IBM)

Show details on NVD website

JSON

To clipboard

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FKIE_CVE-2026-19795

Vulnerability from fkie_nvd - Published: 2026-09-03 20:17 - Updated: 2026-09-08 14:17

Severity

6.2 (Medium) - CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Summary

References

	URL	Tags
	psirt@us.ibm.com	https://www.ibm.com/support/pages/node/7285932

Impacted products

	Vendor	Product	Version

JSON

To clipboard

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Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.