CVE-2018-15356
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 · uneditedAn authenticated attacker can execute arbitrary code using command ejection in Eltex ESP-200 firmware version 1.2.0.
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 · moderate confidenceThe Eltex ESP-200 firmware version 1.2.0 contains a command injection vulnerability allowing an authenticated attacker to execute arbitrary code through a 'command ejection' technique. This suggests the attacker can escape from a sandboxed command environment or inject commands into an insecure input field that is then executed with elevated privileges on the device.
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= 1.2.0CVSS 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
- Low
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.0/AV:N/AC:L/PR:L/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 modelLog into the device administrative interface or check the device label to confirm it is an Eltex ESP-200 deviceAffected if The device is not an Eltex ESP-200, the vulnerability does not apply
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Check the firmware versionNavigate to the device firmware or system information page in the web management interface, or use the CLI command 'show version' or 'system info' to retrieve the installed firmware versionAffected if The installed firmware version is exactly 1.2.0 - other versions are not affected by this specific CVE
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Verify administrative access is enabledCheck if the web management interface or SSH/Telnet administrative access is configured and accessible. Look for enabled administrative user accounts in the user management sectionAffected if Administrative authentication is enabled and accessible to the attacker - this is required for exploitation
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Confirm command ejection feature existsInspect the device web interface or CLI for available command execution features. Look for any diagnostic, ping, traceroute, or shell command input fields that could be used for command injectionAffected if The device has an input field or interface that accepts system commands - this is the attack vector for command ejection
You are affected only if you have an Eltex ESP-200 device running firmware version 1.2.0 with administrative access and a command execution feature accessible to an attacker.
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 dataUpdate Eltex ESP-200 firmware to a version beyond 1.2.0 that addresses this vulnerability. If no update is available, restrict administrative access to trusted networks and monitor for unauthorized administrative sessions.
- Consultation2.0 h
- Implementation4.0 h
- Testing4.0 h
- Review / QA2.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $3,328.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2018-15356 — 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-2018-15356 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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