CVE-2019-16879
Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.
NVD · uneditedThe 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.
Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.
dbcve analysis · high confidenceThe Synergy Systems & Solutions HUSKY RTU 6049-E70 with firmware versions 5.0 and prior contains a critical authentication bypass vulnerability (CWE-306). The device's TELNET service does not require any authentication, allowing unauthenticated remote attackers to connect directly to the RTU and modify configurations or execute arbitrary commands.
Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.
Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.
NVD · CPE data<= 5.0CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.
From the vector- Attack vector
- Network
- Complexity
- Low
- Privileges
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.
dbcve checksWork through these to decide whether this CVE applies to you.
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Identify the device modelLocate the physical RTU or check your asset inventory for Synergy Systems & Solutions HUSKY RTU 6049-E70 hardwareAffected if The device is a HUSKY RTU 6049-E70
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Check the firmware versionAccess the device management interface or console and retrieve the installed firmware version numberAffected if Firmware version is 5.0 or any version prior to 5.0
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Verify TELNET service statusCheck if the TELNET service is enabled and listening on the device, typically on port 23Affected if TELNET service is actively running on the device
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Test TELNET authentication requirementAttempt to connect to the device via TELNET from a remote location without providing credentialsAffected if Connection succeeds without prompting for any username or password
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Assess network exposureDetermine if the device TELNET port (23/TCP) is accessible from untrusted networksAffected if TELNET port is exposed to network segments beyond trusted administrative access
You are affected if you have a HUSKY RTU 6049-E70 with firmware version 5.0 or prior and the TELNET service is enabled on the device.
Generated from the published advisory. Verify against your own configuration.
Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.
From vendor dataDisable TELNET access on affected devices and implement SSH for remote access. If TELNET is operationally required, restrict network access through firewalls/VPNs and implement additional monitoring. Consider firmware upgrade if vendor provides patched version.
- Consultation4.0 h
- Implementation6.0 h
- Testing8.0 h
- Review / QA4.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $6,080.
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Free · runs locallyCheck whether your project pulls in CVE-2019-16879 — or any other known-vulnerable package — straight from your lock files. Free and open source; it runs locally and uploads nothing.
References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.
Primary sourcesPractitioner notes
ContributedPeer-ranked notes from engineers who’ve handled CVE-2019-16879 in production — separate from our analysis above.
The advisory tells you what broke. It rarely tells you what actually worked. If you’ve dealt with this one, that detail is what the next engineer is searching for.
- The version that genuinely resolved it — not the one the vendor claimed
- A config change or rule that shut the vector down
- A gotcha in the upgrade path that cost you an afternoon
No notes yet
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- Verified mitigations, workarounds, and config changes
- Version or environment caveats, and links to real fixes
- No weaponised exploit code, or anything meant to cause harm
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