Vulnerability-Lookup

CVE-2026-7328 (GCVE-0-2026-7328)

Vulnerability from cvelistv5 – Published: 2026-07-22 16:17 – Updated: 2026-07-22 18:49 X_Open Source

Title

Unverified AXI Address in Subsystem Mode Commands Enables Denial of Service

Summary

Missing authorization in Caliptra Core Runtime Firmware (INVOKE_DPE_MLDSA87, CM_AES_GCM_DECRYPT_DMA, EXTERNAL_MAILBOX_CMD commands) in subsystem mode allows a privileged local attacker to cause a denial of service via mailbox commands containing unverified AXI addresses. The security impact beyond availability is integration-specific. This issue affects Core Runtime Firmware: 2.1.0.

Severity

6.8 (Medium)


                        
                          CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:L/SA:N

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-07-22 18:49 UTC

CWE

CWE-862 - Missing Authorization

Assigner

Caliptra mitre root

References

1 reference

URL	Tags
https://github.com/chipsalliance/caliptra-sw/secu…

Impacted products

1 product

Vendor	Product	Version	CPE status
Caliptra	Core Runtime Firmware	Affected: 2.1.0 (semver) Unaffected: 2.1.1 (semver)	guessed

Date Public

2026-07-22 19:00

Show details on NVD website

JSON

To clipboard

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FKIE_CVE-2026-7328

Vulnerability from fkie_nvd - Published: 2026-07-22 17:16 - Updated: 2026-07-22 20:40

Severity

6.8 (Medium) - CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:L/SA:N

Summary

References

	URL	Tags
	b01ddd03-5ef6-483b-b2c5-acba77f1a554	https://github.com/chipsalliance/caliptra-sw/security/advisories/GHSA-c5v4-q445-wv84

Impacted products

	Vendor	Product	Version

JSON

To clipboard

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        {
          "collectionURL": "https://github.com/chipsalliance/caliptra-sw",
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    }
  ],
  "id": "CVE-2026-7328",
  "lastModified": "2026-07-22T20:40:57.147",
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          "modifiedAttackComplexity": "NOT_DEFINED",
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          "modifiedPrivilegesRequired": "NOT_DEFINED",
          "modifiedSubAvailabilityImpact": "NOT_DEFINED",
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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.