How severe is CVE-2019-18247?

CVE-2019-18247 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2019-18247 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (72nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2019-18247?

CVE-2019-18247 primarily affects Hitachienergy Relion 650 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-2019-18247?

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

When was CVE-2019-18247 published?

CVE-2019-18247 was published on 2019-11-27 and last updated on 2026-06-17.

CVE-2019-18247

CVE-2019-18247 is a high-severity vulnerability in Hitachienergy Relion 650 Firmware with a CVSS 3.x base score of 7.5. 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-20.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v2: 7.8
EPSS exploit prediction: 2% (72nd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-20
Affected product: Hitachienergy Relion 650 Firmware
Published: 2019-11-27
Last modified: 2026-06-17

Description

An attacker may use a specially crafted message to force Relion 650 series (versions 1.3.0.5 and prior) or Relion 670 series (versions 1.2.3.18, 2.0.0.11, 2.1.0.1 and prior) to reboot, which could cause a denial of service.

Frequently asked questions

What is CVE-2019-18247?: An attacker may use a specially crafted message to force Relion 650 series (versions 1.3.0.5 and prior) or Relion 670 series (versions 1.2.3.18, 2.0.0.11, 2.1.0.1 and prior) to reboot, which could cause a denial of service.
How severe is CVE-2019-18247?: CVE-2019-18247 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2019-18247 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (72nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2019-18247?: CVE-2019-18247 primarily affects Hitachienergy Relion 650 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-2019-18247?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2019-18247 published?: CVE-2019-18247 was published on 2019-11-27 and last updated on 2026-06-17.

References

https://www.us-cert.gov/ics/advisories/icsa-19-330-02

Affected products (2)

cpe:2.3:o:hitachienergy:relion_650_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:hitachienergy:relion_670_firmware:*:*:*:*:*:*:*:*

More vulnerabilities in Hitachienergy Relion 650 Firmware

CVE-2021-35535 — High (CVSS 8.1): Insecure Boot Image vulnerability in Hitachi Energy Relion Relion 670/650/SAM600-IO series allows an attacker who…
CVE-2021-27196 — High (CVSS 7.5): Improper Input Validation vulnerability in Hitachi ABB Power Grids Relion 670 Series, Relion 670/650 Series, Relion…
CVE-2021-35534 — High (CVSS 7.2): Insufficient security control vulnerability in internal database access mechanism of Hitachi Energy Relion…
CVE-2023-4518 — Medium (CVSS 6.5): A vulnerability exists in the input validation of the GOOSE messages where out of range values received and processed…
CVE-2022-3353 — Medium (CVSS 5.9): A vulnerability exists in the IEC 61850 communication stack that affects multiple Hitachi Energy products. An…
CVE-2022-3864 — Medium (CVSS 4.5): A vulnerability exists in the Relion update package signature validation. A tampered update package could cause the IED…

All CVEs affecting Hitachienergy Relion 650 Firmware →

Other CWE-20 (Improper Input Validation) vulnerabilities

CVE-2026-48316 — Critical (CVSS 10.0): ColdFusion versions 2025.9, 2023.20 and earlier are affected by an Improper Input Validation vulnerability that could…
CVE-2026-48281 — Critical (CVSS 10.0): ColdFusion versions 2025.9, 2023.20 and earlier are affected by an Improper Input Validation vulnerability that could…
CVE-2026-48277 — Critical (CVSS 10.0): ColdFusion versions 2025.9, 2023.20 and earlier are affected by an Improper Input Validation vulnerability that could…
CVE-2026-48055 — Critical (CVSS 10.0): Streambert is a cross-platform Electron Desktop App to stream and download any video media. In versions 2.4.0 and…
CVE-2026-34910 — Critical (CVSS 10.0): A malicious actor with access to the network could exploit an Improper Input Validation vulnerability found in UniFi OS…
CVE-2026-33587 — Critical (CVSS 10.0): Lack of user input sanitisation in Open Notebook v1.8.3 allows the application user to execute Python code (and…

Browse all CWE-20 (Improper Input Validation) vulnerabilities →