CVE-2018-17873: An incorrect access control vulnerability in the FTP configuration of WiFiRanger devices with firmware version

Q: How do I fix CVE-2018-17873?

wifiranger firmware: upgrade to newer than 7.0.8. Exact commands for each OS are on this page.

Q: Is CVE-2018-17873 being exploited?

CVE-2018-17873 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2018-17873 affect?

CVE-2018-17873 affects wifiranger firmware. Severity is high (CVSS 8.8). An incorrect access control vulnerability in the FTP configuration of WiFiRanger devices with firmware version 7.0.8rc3 and earlier allows an attacker with adjacent network access to read the SSH Private Key and log in to the root account.

Q: How urgent is CVE-2018-17873?

Priority 56/100. High severity; Public exploit reference

This month

HIGH 8.8UPGRADE

CVE-2018-17873 is a high-severity flaw (CVSS 8.8) affecting wifiranger firmware. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

An incorrect access control vulnerability in the FTP configuration of WiFiRanger devices with firmware version 7.0.8rc3 and earlier allows an attacker with adjacent network access to read the SSH Private Key and log in to the root account.

Why this priority

High severity
Public exploit reference

A fixed release or distro patch exists.

Risk facts

CVSS score	8.8 (High)
Attack vector	Adjacent network
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	1.9% (top 21%)
CISA exploited list	No
Weakness	CWE-732
Published	2018-10-23
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: wifiranger

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

Am I affected?

Timeline

2018-10-23 21:30 UTCPublished CVE record published
2026-06-17 01:46 UTCUpdated Record last modified

wifiranger wifiranger firmware UPGRADE

Affected: <= 7.0.8

Fixed in: newer than 7.0.8

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-2018-17873?

wifiranger firmware: upgrade to newer than 7.0.8. Exact commands for each OS are on this page.

Is CVE-2018-17873 being exploited?

CVE-2018-17873 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-2018-17873 affect?

CVE-2018-17873 affects wifiranger firmware. Severity is high (CVSS 8.8). An incorrect access control vulnerability in the FTP configuration of WiFiRanger devices with firmware version 7.0.8rc3 and earlier allows an attacker with adjacent network access to read the SSH Private Key and log in to the root account.

How urgent is CVE-2018-17873?

Priority 56/100. High severity; Public exploit reference

References

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