How severe is CVE-2019-14926?

CVE-2019-14926 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2019-14926 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (80th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2019-14926?

CVE-2019-14926 primarily affects Mitsubishielectric Smartrtu Firmware. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2019-14926?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

When was CVE-2019-14926 published?

CVE-2019-14926 was published on 2019-10-28 and last updated on 2026-06-17.

CVE-2019-14926

CVE-2019-14926 is a critical-severity vulnerability in Mitsubishielectric Smartrtu Firmware with a CVSS 3.x base score of 9.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-798.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v2: 7.5
EPSS exploit prediction: 2% (80th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-798
Affected product: Mitsubishielectric Smartrtu Firmware
Published: 2019-10-28
Last modified: 2026-06-17

Description

An issue was discovered on Mitsubishi Electric Europe B.V. ME-RTU devices through 2.02 and INEA ME-RTU devices through 3.0. Hard-coded SSH keys allow an attacker to gain unauthorised access or disclose encrypted data on the RTU due to the keys not being regenerated on initial installation or with firmware updates. In other words, these devices use private-key values in /etc/ssh/ssh_host_rsa_key, /etc/ssh/ssh_host_ecdsa_key, and /etc/ssh/ssh_host_dsa_key files that are publicly available from the vendor web sites.

Frequently asked questions

What is CVE-2019-14926?: An issue was discovered on Mitsubishi Electric Europe B.V. ME-RTU devices through 2.02 and INEA ME-RTU devices through 3.0. Hard-coded SSH keys allow an attacker to gain unauthorised access or disclose encrypted data on the RTU due to the keys not being regenerated on initial installation or with firmware updates. In other words, these devices use private-key values in /etc/ssh/ssh_host_rsa_key, /etc/ssh/ssh_host_ecdsa_key, and /etc/ssh/ssh_host_dsa_key files that are publicly available from the vendor web sites.
How severe is CVE-2019-14926?: CVE-2019-14926 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2019-14926 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (80th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2019-14926?: CVE-2019-14926 primarily affects Mitsubishielectric Smartrtu Firmware. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2019-14926?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2019-14926 published?: CVE-2019-14926 was published on 2019-10-28 and last updated on 2026-06-17.

References

Affected products (2)

cpe:2.3:o:mitsubishielectric:smartrtu_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:inea:me-rtu_firmware:*:*:*:*:*:*:*:*

More vulnerabilities in Mitsubishielectric Smartrtu Firmware

CVE-2019-14931 — Critical (CVSS 9.8): An issue was discovered on Mitsubishi Electric Europe B.V. ME-RTU devices through 2.02 and INEA ME-RTU devices through…
CVE-2019-14930 — Critical (CVSS 9.8): An issue was discovered on Mitsubishi Electric Europe B.V. ME-RTU devices through 2.02 and INEA ME-RTU devices through…
CVE-2019-14929 — Critical (CVSS 9.8): An issue was discovered on Mitsubishi Electric Europe B.V. ME-RTU devices through 2.02 and INEA ME-RTU devices through…
CVE-2018-16060 — High (CVSS 7.5): Mitsubishi Electric Europe B.V. SmartRTU devices allow remote attackers to obtain sensitive information (directory…
CVE-2019-14927 — High (CVSS 7.5): An issue was discovered on Mitsubishi Electric Europe B.V. ME-RTU devices through 2.02 and INEA ME-RTU devices through…
CVE-2019-14925 — Medium (CVSS 6.5): An issue was discovered on Mitsubishi Electric Europe B.V. ME-RTU devices through 2.02 and INEA ME-RTU devices through…

All CVEs affecting Mitsubishielectric Smartrtu Firmware →

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