How severe is CVE-2019-6528?

CVE-2019-6528 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2019-6528 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (83rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2019-6528?

CVE-2019-6528 primarily affects Psigridconnect Telecontrol Gateway Xs-mu Firmware. In total, 5 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2019-6528?

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-2019-6528 published?

CVE-2019-6528 was published on 2019-03-05 and last updated on 2026-06-17.

CVE-2019-6528

CVE-2019-6528 is a high-severity vulnerability in Psigridconnect Telecontrol Gateway Xs-mu Firmware with a CVSS 3.x base score of 8.8. 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-79.

Key facts

Severity: High (CVSS 3.x base score 8.8)
CVSS v2: 6.5
EPSS exploit prediction: 3% (83rd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Psigridconnect Telecontrol Gateway Xs-mu Firmware
Published: 2019-03-05
Last modified: 2026-06-17

Description

PSI GridConnect GmbH Telecontrol Gateway and Smart Telecontrol Unit family, IEC104 Security Proxy versions Telecontrol Gateway 3G Versions 4.2.21, 5.0.27, 5.1.19, 6.0.16 and prior, and Telecontrol Gateway XS-MU Versions 4.2.21, 5.0.27, 5.1.19, 6.0.16 and prior, and Telecontrol Gateway VM Versions 4.2.21, 5.0.27, 5.1.19, 6.0.16 and prior, and Smart Telecontrol Unit TCG Versions 5.0.27, 5.1.19, 6.0.16 and prior, and IEC104 Security Proxy Version 2.2.10 and prior The web application browser interprets input as active HTML, JavaScript, or VBScript, which could allow an attacker to execute arbitrary code.

Frequently asked questions

What is CVE-2019-6528?: PSI GridConnect GmbH Telecontrol Gateway and Smart Telecontrol Unit family, IEC104 Security Proxy versions Telecontrol Gateway 3G Versions 4.2.21, 5.0.27, 5.1.19, 6.0.16 and prior, and Telecontrol Gateway XS-MU Versions 4.2.21, 5.0.27, 5.1.19, 6.0.16 and prior, and Telecontrol Gateway VM Versions 4.2.21, 5.0.27, 5.1.19, 6.0.16 and prior, and Smart Telecontrol Unit TCG Versions 5.0.27, 5.1.19, 6.0.16 and prior, and IEC104 Security Proxy Version 2.2.10 and prior The web application browser interprets input as active HTML, JavaScript, or VBScript, which could allow an attacker to execute arbitrary code.
How severe is CVE-2019-6528?: CVE-2019-6528 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2019-6528 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (83rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2019-6528?: CVE-2019-6528 primarily affects Psigridconnect Telecontrol Gateway Xs-mu Firmware. In total, 5 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2019-6528?: 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-2019-6528 published?: CVE-2019-6528 was published on 2019-03-05 and last updated on 2026-06-17.

References

Affected products (5)

cpe:2.3:o:psigridconnect:telecontrol_gateway_xs-mu_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:psigridconnect:telecontrol_gateway_vm_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:psigridconnect:telecontrol_gateway_3g_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:psigridconnect:smart_telecontrol_unit_tcg_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:psigridconnect:iec104_security_proxy_firmware:*:*:*:*:*:*:*:*

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