CVE-2026-13743

Malicious firmware installation via improper signature verification

Published Jul 2, 2026 · Updated Jul 2, 2026

Improper signature verification in CubeSpace CW0057 Reaction Wheel before 5.0.20 allows physically proximate attackers to install malicious firmware. The device's firmware upload path accepts an attacker-supplied image without successfully verifying its cryptographic signature. Physical access is required, but authentication is not; installed firmware can control device behavior and interrupt reaction-wheel operation.

CVSS severityUnavailable
Unscored
EPSS probability0.16%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper signature verification in CubeSpace CW0057 Reaction Wheel before 5.0.20 allows physically proximate attackers to install malicious firmware. The device's firmware upload path accepts an attacker-supplied image without successfully verifying its cryptographic signature. Physical access is required, but authentication is not; installed firmware can control device behavior and interrupt reaction-wheel operation.

The record

CVE
CVE-2026-13743
Published
Jul 2, 2026
Updated
Jul 2, 2026
Vendor
CubeSpace
Product
CW0057 Reaction Wheel
Classifications
CWE-347, T1693.001
Attack vector
physical
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jul 2, 2026CVE publishedPublication date reported by the CVE source.
  2. Jul 2, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <5.0.20

What conditions does exploitation require?

Attack vectorphysical
Required privilegesunauthenticated

What is affected?

CubeSpace · CW0057 Reaction Wheelversion=0 <5.0.20

Published CVSS scores

3.3ICS-CERTCVSS: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

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorphysical
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-347Improper Verification of Cryptographic Signature
T1693.001System Firmware

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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