CVE-2018-8755: NuCom WR644GACV devices before STA006 allow an attacker to download the configuration file without credentials

Q: How do I fix CVE-2018-8755?

wr644gacv firmware: upgrade to sta006. Exact commands for each OS are on this page.

Q: Is CVE-2018-8755 being exploited?

CVE-2018-8755 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-2018-8755 affect?

CVE-2018-8755 affects wr644gacv firmware. Severity is critical (CVSS 9.8). NuCom WR644GACV devices before STA006 allow an attacker to download the configuration file without credentials. By downloading this file, an attacker can access the admin password, WPA key, and any config information of the device.

Q: How urgent is CVE-2018-8755?

Priority 56/100. Critical severity; Remotely exploitable, no login, no user action

This month

CRITICAL 9.8REMOTEUPGRADE

CVE-2018-8755 is a critical-severity flaw (CVSS 9.8) affecting wr644gacv firmware. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

NuCom WR644GACV devices before STA006 allow an attacker to download the configuration file without credentials. By downloading this file, an attacker can access the admin password, WPA key, and any config information of the device.

Why this priority

Critical severity
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	9.8 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	1.1% (top 35%)
CISA exploited list	No
Weakness	CWE-862
Published	2018-06-25
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: nucom

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

Am I affected?

Timeline

2018-06-25 15:29 UTCPublished CVE record published
2026-06-17 02:05 UTCUpdated Record last modified

nucom wr644gacv firmware UPGRADE

Affected: < sta006

Fixed in: sta006

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-2018-8755?

wr644gacv firmware: upgrade to sta006. Exact commands for each OS are on this page.

Is CVE-2018-8755 being exploited?

CVE-2018-8755 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-2018-8755 affect?

CVE-2018-8755 affects wr644gacv firmware. Severity is critical (CVSS 9.8). NuCom WR644GACV devices before STA006 allow an attacker to download the configuration file without credentials. By downloading this file, an attacker can access the admin password, WPA key, and any config information of the device.

How urgent is CVE-2018-8755?

Priority 56/100. Critical severity; Remotely exploitable, no login, no user action

References

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