CVE-2019-16879Network attack vector

Unauthenticated configuration changes via exposed Telnet shell

Published Apr 14, 2020 · Updated Aug 5, 2024

Missing authentication in HUSKY RTU 6049-E70 firmware 5.0 and earlier allows remote attackers to change configuration via Telnet. The RTU exposes its Telnet shell without requiring authentication, allowing reachable hosts to invoke configuration-changing functions. Network reachability to the service is sufficient, and resulting changes can leave the device configuration nonfunctional after a reboot.

CVSS severity9.8
Critical
EPSS probability1.37%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Missing authentication in HUSKY RTU 6049-E70 firmware 5.0 and earlier allows remote attackers to change configuration via Telnet. The RTU exposes its Telnet shell without requiring authentication, allowing reachable hosts to invoke configuration-changing functions. Network reachability to the service is sufficient, and resulting changes can leave the device configuration nonfunctional after a reboot.

The record

CVE
CVE-2019-16879
Published
Apr 14, 2020
Updated
Aug 5, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-306, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Apr 14, 2020CVE publishedPublication date reported by the CVE source.
  2. Aug 5, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

7.5NIST NVDAV:N/AC:L/Au:N/C:P/I:P/A:P
9.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-306Missing Authentication for Critical Function
T1190Exploit Public-Facing Application

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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