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Moxa published security advisories for its industrial computer DA Series indicating that multiple vulnerabilities in underlying Intel firmware components can impact affected devices, including conditions leading to remote denial of service, privilege escalation, and potential confidentiality impacts. Affected systems include DA-682C (BIOS versions prior to v1.6), DA-820C (prior to v1.3), and DA-820E (as listed by CERT-FR), with the Canadian Centre for Cyber Security also flagging DA Series BIOS exposure broadly and calling out DA-682C BIOS v1.5 and earlier and DA-820C BIOS v1.2 and earlier.
The advisories map to Intel security issues including Intel BIOS firmware DoS (INTEL-SA-00813) and multiple vulnerabilities in Intel CSME/AMT (INTEL-SA-00391, INTEL-SA-00709). CERT-FR’s notice references related CVEs (including CVE-2020-8747, CVE-2020-8749, CVE-2020-8752, and CVE-2022-28697) and directs organizations to apply vendor-provided BIOS updates and mitigations from Moxa’s bulletins (mpsa-256821, mpsa-256822, mpsa-256823) to reduce exposure in operational technology environments.
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On the same day as Moxa's advisories, CERT-FR and the Canadian Centre for Cyber Security published alerts warning about the vulnerabilities and directing administrators to review vendor guidance and apply updates. Their notices identified affected Moxa DA Series devices and summarized the potential impacts of the flaws.
Moxa published security advisories MPSA-256821, MPSA-256822, and MPSA-256823 addressing multiple BIOS/firmware vulnerabilities affecting DA Series industrial products. The advisories covered affected DA Series BIOS versions and provided updates and mitigation guidance for flaws including Intel-SA-00813, Intel-SA-00391, and Intel-SA-00709.
CERT-FR indicates a new notification campaign began for multiple vulnerabilities affecting Moxa products, including DA-682C, DA-820C, and DA-820E systems. The issues were tied to Intel BIOS firmware and CSME/AMT components and could enable confidentiality impacts, remote denial of service, and privilege escalation.
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Moxa issued security advisories for multiple industrial and embedded product families, including the **UC Series**, **V Series**, **VM-1220 Series**, **ioThinx 4530 Series**, **AIG Series**, **BXP Series**, **DRP-A100/DRP-C100 Series**, and **RKP Series**. A Canadian Centre for Cyber Security notice highlighted the disclosures and directed operators to review Moxa’s published advisories and apply vendor-provided updates. The advisories include **`CVE-2026-46333`**, identified as the **"ssh-keysign-pwn"** vulnerability in the Linux kernel. The issue affects control-system environments using impacted Moxa platforms, raising patching and asset-review priorities for organizations that rely on these devices in operational technology and embedded deployments.
Jul 24, 2026
Moxa issued advisory **MPSA-263140** for multiple industrial and embedded computing product lines affected by three Linux kernel vulnerabilities: **CVE-2026-31431** ("**Copy Fail**") and **CVE-2026-43284** plus **CVE-2026-43500** ("**Dirty Frag**"). The company said the flaws could allow unprivileged local users to gain administrative or root access on affected devices, with added risk of container escape and host compromise in environments running untrusted workloads. Canada’s Cyber Centre separately alerted operators to review Moxa’s guidance for impacted **UC, V, VM, ioThinx, AIG, BXP, DRP, and RKP** series products. Because permanent fixes were not yet broadly available for all affected Moxa platforms, the vendor urged immediate mitigations such as blacklisting or unloading vulnerable kernel modules including `rxrpc`, `esp4`, and `esp6`, while warning that disabling `esp4` and `esp6` can break **IPsec/VPN** connectivity and some devices require bootloader changes because `algif_aead` is built into the kernel. For CTOS-based Debian systems, Moxa advised updating from Debian security repositories, reinstalling the x86 SDK, and rebooting. The advisory follows wider industry response to the same kernel bugs: **CVE-2026-31431** was added to CISA’s **Known Exploited Vulnerabilities** catalog, Ubuntu released mitigations that disable the vulnerable module, and Red Hat published OpenShift guidance for Dirty Frag-related exposure.
Jun 29, 2026
CERT-FR published two advisories covering vulnerabilities in **Moxa** products, warning that the flaws could let attackers **escalate privileges** and undermine core security controls. One notice said successful exploitation could also affect **data confidentiality** and **data integrity**, raising concern for industrial and networked environments where Moxa equipment is commonly deployed. A separate CERT-FR notice reported another Moxa vulnerability that could allow an attacker to **bypass the security policy**. The advisories did not provide further technical details in the referenced content, including affected models, `CVE` identifiers, or specific remediation steps, leaving organizations to monitor vendor and national CERT guidance closely for product impact and patch information.
Jun 29, 2026