CubeSpace CW0057 Reaction Wheel firmware versions prior to 5.0.20 are vulnerable to an Improper Verification of Cryptographic Signature vulnerability. This could allow an attacker with physical access to the product to upload arbitrary malicious firmware to the device without authentication.
CubeSpace has released the following firmware versions for users to enable: Firmware version 5.0.20. Firmware version 5.0.20 introduces the capability for cryptographically verified secure boot; however, this protection is not enabled by default. Users must activate signed‑boot functionality, particularly the fully immutable mode, to achieve full security.
CubeSpace acknowledges the finding. The CW0057 reaction wheel authenticates firmware updates with a CRC-32 integrity check, which confirms image integrity but does not verify the source of an image. Exploitation requires direct physical access to the device and is not exploitable remotely. A device affected by this method remains recoverable: the bootloader operates independently of the application firmware and can reload known-good, CubeSpace-supplied images, so an affected unit cannot be permanently disabled by this method. Starting with firmware version 5.0.20, CubeSpace offers optional cryptographic secure boot of varying security levels which customers can enable. Given the physical-access prerequisite and the availability of recovery, CubeSpace assesses the practical risk as low.
"}],"value":"CubeSpace has released the following firmware versions for users to enable: Firmware version 5.0.20. Firmware version 5.0.20 introduces the capability for cryptographically verified secure boot; however, this protection is not enabled by default. Users must activate signed‑boot functionality, particularly the fully immutable mode, to achieve full security.\n\n\n\nCubeSpace acknowledges the finding. The CW0057 reaction wheel authenticates firmware updates with a CRC-32 integrity check, which confirms image integrity but does not verify the source of an image. Exploitation requires direct physical access to the device and is not exploitable remotely. A device affected by this method remains recoverable: the bootloader operates independently of the application firmware and can reload known-good, CubeSpace-supplied images, so an affected unit cannot be permanently disabled by this method. Starting with firmware version 5.0.20, CubeSpace offers optional cryptographic secure boot of varying security levels which customers can enable. Given the physical-access prerequisite and the availability of recovery, CubeSpace assesses the practical risk as low."}],"source":{"discovery":"UNKNOWN"},"title":"Improper verification of cryptographic signature in CubeSpace CW0057 Reaction Wheel","x_generator":{"engine":"Vulnogram 1.0.2"}}},"cveMetadata":{"assignerOrgId":"7d14cffa-0d7d-4270-9dc0-52cabd5a23a6","assignerShortName":"icscert","cveId":"CVE-2026-13743","datePublished":"2026-07-02T18:35:26.637Z","dateReserved":"2026-06-29T15:29:03.049Z","dateUpdated":"2026-07-02T19:07:38.419Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-07-02 19:16:59","lastModifiedDate":"2026-07-06 19:42:59","problem_types":["CWE-347","CWE-347 CWE-347 Improper verification of cryptographic signature"],"metrics":{"cvssMetricV40":[{"source":"ics-cert@hq.dhs.gov","type":"Secondary","cvssData":{"version":"4.0","vectorString":"CVSS:4.0/AV:P/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","baseScore":3.3,"baseSeverity":"LOW","attackVector":"PHYSICAL","attackComplexity":"LOW","attackRequirements":"NONE","privilegesRequired":"NONE","userInteraction":"NONE","vulnConfidentialityImpact":"NONE","vulnIntegrityImpact":"HIGH","vulnAvailabilityImpact":"HIGH","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","subAvailabilityImpact":"NONE","exploitMaturity":"PROOF_OF_CONCEPT","confidentialityRequirement":"NOT_DEFINED","integrityRequirement":"NOT_DEFINED","availabilityRequirement":"NOT_DEFINED","modifiedAttackVector":"NOT_DEFINED","modifiedAttackComplexity":"NOT_DEFINED","modifiedAttackRequirements":"NOT_DEFINED","modifiedPrivilegesRequired":"NOT_DEFINED","modifiedUserInteraction":"NOT_DEFINED","modifiedVulnConfidentialityImpact":"NOT_DEFINED","modifiedVulnIntegrityImpact":"NOT_DEFINED","modifiedVulnAvailabilityImpact":"NOT_DEFINED","modifiedSubConfidentialityImpact":"NOT_DEFINED","modifiedSubIntegrityImpact":"NOT_DEFINED","modifiedSubAvailabilityImpact":"NOT_DEFINED","Safety":"NOT_DEFINED","Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","valueDensity":"NOT_DEFINED","vulnerabilityResponseEffort":"NOT_DEFINED","providerUrgency":"NOT_DEFINED"}}],"ssvcV203":[{"source":"134c704f-9b21-4f2e-91b3-4a467353bcc0","ssvcData":{"timestamp":"2026-07-02T19:07:29.852399Z","id":"CVE-2026-13743","options":[{"exploitation":"none"},{"automatable":"no"},{"technicalImpact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}]},"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"13743","Ordinal":"1","Title":"Improper verification of cryptographic signature in CubeSpace CW","CVE":"CVE-2026-13743","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"13743","Ordinal":"1","NoteData":"CubeSpace CW0057 Reaction Wheel firmware versions prior to 5.0.20 are vulnerable to an Improper Verification of Cryptographic Signature vulnerability. This could allow an attacker with physical access to the product to upload arbitrary malicious firmware to the device without authentication.","Type":"Description","Title":"Improper verification of cryptographic signature in CubeSpace CW"}]}}}