How severe is CVE-2019-16879?

CVE-2019-16879 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-2019-16879 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (69th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2019-16879?

CVE-2019-16879 affects Mysyngeryss Husky Rtu 6049-e70 Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2019-16879?

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-2019-16879 published?

CVE-2019-16879 was published on 2020-04-14 and last updated on 2026-06-17.

CVE-2019-16879

CVE-2019-16879 is a critical-severity vulnerability in Mysyngeryss Husky Rtu 6049-e70 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-306.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v2: 7.5
EPSS exploit prediction: 1% (69th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-306
Affected product: Mysyngeryss Husky Rtu 6049-e70 Firmware
Published: 2020-04-14
Last modified: 2026-06-17

Description

The Synergy Systems & Solutions (SSS) HUSKY RTU 6049-E70, with firmware Versions 5.0 and prior, has a Missing Authentication for Critical Function (CWE-306) vulnerability. The affected product does not require authentication for TELNET access, which may allow an attacker to change configuration or perform other malicious activities.

Frequently asked questions

What is CVE-2019-16879?: The Synergy Systems & Solutions (SSS) HUSKY RTU 6049-E70, with firmware Versions 5.0 and prior, has a Missing Authentication for Critical Function (CWE-306) vulnerability. The affected product does not require authentication for TELNET access, which may allow an attacker to change configuration or perform other malicious activities.
How severe is CVE-2019-16879?: CVE-2019-16879 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-2019-16879 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (69th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2019-16879?: CVE-2019-16879 affects Mysyngeryss Husky Rtu 6049-e70 Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2019-16879?: 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-2019-16879 published?: CVE-2019-16879 was published on 2020-04-14 and last updated on 2026-06-17.

References

https://www.us-cert.gov/ics/advisories/icsa-20-042-01

Affected products (1)

cpe:2.3:o:mysyngeryss:husky_rtu_6049-e70_firmware:*:*:*:*:*:*:*:*

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