CVE-2023-1257
mediumpriority · track · 27EPSS 0.003 · 24 %ileEURUUSEPSS · scored 2026-10-26
An attacker with physical access to the affected Moxa UC Series devices can initiate a restart of the device and gain access to its BIOS. Command line options can then be altered, allowing the attacker to access the terminal. From the terminal, the attacker can modify the device’s authentication files to create a new user and gain full access to the system.
remediations
Vendor fix, mitigation, or workaround guidance, as published by each source.
No vendor fix yet; a mitigation is available.
- MitigationUC-2100 Seriescisa_csaf_ot
Users are encouraged to visit Moxa's security advisory for more information.
https://www.moxa.com/en/support/product-support/security-advisory/moxa-uc-series-improper-physical-access-control-vulnerability - MitigationUC-2100-W Seriescisa_csaf_ot
Users are encouraged to visit Moxa's security advisory for more information.
https://www.moxa.com/en/support/product-support/security-advisory/moxa-uc-series-improper-physical-access-control-vulnerability - MitigationUC-3100 Seriescisa_csaf_ot
Users are encouraged to visit Moxa's security advisory for more information.
https://www.moxa.com/en/support/product-support/security-advisory/moxa-uc-series-improper-physical-access-control-vulnerability - MitigationUC-5100 Seriescisa_csaf_ot
Users are encouraged to visit Moxa's security advisory for more information.
https://www.moxa.com/en/support/product-support/security-advisory/moxa-uc-series-improper-physical-access-control-vulnerability - MitigationUC-8100 Seriescisa_csaf_ot
Users are encouraged to visit Moxa's security advisory for more information.
https://www.moxa.com/en/support/product-support/security-advisory/moxa-uc-series-improper-physical-access-control-vulnerability - MitigationUC-8100A-ME-T Seriescisa_csaf_ot
Users are encouraged to visit Moxa's security advisory for more information.
https://www.moxa.com/en/support/product-support/security-advisory/moxa-uc-series-improper-physical-access-control-vulnerability - MitigationUC-8200 Seriescisa_csaf_ot
Users are encouraged to visit Moxa's security advisory for more information.
https://www.moxa.com/en/support/product-support/security-advisory/moxa-uc-series-improper-physical-access-control-vulnerability - MitigationUC-8410A Seriescisa_csaf_ot
Users are encouraged to visit Moxa's security advisory for more information.
https://www.moxa.com/en/support/product-support/security-advisory/moxa-uc-series-improper-physical-access-control-vulnerability - MitigationUC-8540 Seriescisa_csaf_ot
Users are encouraged to visit Moxa's security advisory for more information.
https://www.moxa.com/en/support/product-support/security-advisory/moxa-uc-series-improper-physical-access-control-vulnerability - MitigationUC-8580 Seriescisa_csaf_ot
Users are encouraged to visit Moxa's security advisory for more information.
https://www.moxa.com/en/support/product-support/security-advisory/moxa-uc-series-improper-physical-access-control-vulnerability
cvss
Technical severity, 0–10. One row per scoring source.
base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 6.2–7.6
ssvc
A stakeholder decision — act, attend, or track — from exploitation and impact.
weaknesses
The CWE weakness classes this flaw belongs to.
affected products (95)
Products and version ranges known to be affected.
advisories (1)
Vendor and ecosystem advisories describing this.
- ICSA-22-333-04Moxa UC Series2022-11-29icsa · cisa_csaf_otUS
This updated advisory is a follow-up to the original advisory titled ICSA-22-333-04 Moxa UC Series that was published November 29, 2022, on the ICS webpage on cisa.gov/ICS.
also known as (5)
Other names and identifiers for this entity.
sources
Which sources assert this record, and when.
references (5)
External citations — patches, advisories, analysis.
- https://cxsecurity.com/cveshow/CVE-2023-1257/cnnvd
- https://www.cisa.gov/uscert/ics/advisories/icsa-22-333-04cnnvd
- https://www.moxa.com/en/support/product-support/security-advisory/moxa-uc-series-improper-physical-access-control-vulnerabilityPatchcnnvd
- https://www.cisa.gov/uscert/ics/advisories/icsa-22-333-04enisa_euvd
- https://www.cisa.gov/uscert/ics/advisories/icsa-22-333-04Third Party AdvisoryUS Government Resourcenvd
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