CVE-2018-14528: Invoxia NVX220 devices allow TELNET access as admin with a default password.

This week

CRITICAL 9.8REMOTEMITIGATE

CVE-2018-14528 is a critical-severity flaw (CVSS 9.8) affecting nvx220 firmware. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Invoxia NVX220 devices allow TELNET access as admin with a default password.

Why this priority

Critical severity
Public exploit reference
Remotely exploitable, no login, no user action

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	9.8 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	2.0% (top 20%)
CISA exploited list	No
Weakness	CWE-798
Published	2019-07-05
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: invoxia

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2019-07-05 20:15 UTCPublished CVE record published
2026-06-17 01:41 UTCUpdated Record last modified

invoxia nvx220 firmware MITIGATE

Affected: all versions

Fixed in: no fixed release known

Safe to downgrade to: no unaffected older release

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2018-14528?

nvx220 firmware: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2018-14528 being exploited?

CVE-2018-14528 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2018-14528 affect?

CVE-2018-14528 affects nvx220 firmware. Severity is critical (CVSS 9.8). Invoxia NVX220 devices allow TELNET access as admin with a default password.

How urgent is CVE-2018-14528?

Priority 64/100. Critical severity; Public exploit reference; Remotely exploitable, no login, no user action

Related CVEs

CVE-2018-14529 HIGH 7.5 MITIGATE Invoxia NVX220 devices allow access to /bin/sh via escape from a restricted CLI, leading to disclosure of pass

References

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