CVE-2019-5635: A cleartext transmission of sensitive information vulnerability is present in Hickory Smart Ethernet Bridge fr

Routine

HIGH 7.5REMOTEMITIGATE

CVE-2019-5635 is a high-severity flaw (CVSS 7.5) affecting hickory smart ethernet bridge firmware. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

A cleartext transmission of sensitive information vulnerability is present in Hickory Smart Ethernet Bridge from Belwith Products, LLC. Captured data reveals that the Hickory Smart Ethernet Bridge device communicates over the network to an MQTT broker without using encryption. This exposed the default username and password used to authenticate to the MQTT broker. This issue affects Hickory Smart Ethernet Bridge, model number H077646. The firmware

Why this priority

High severity
Remotely exploitable, no login, no user action

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

Risk facts

CVSS score	7.5 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.4% (top 69%)
CISA exploited list	No
Weakness	CWE-319
Published	2019-08-22
Last modified	2026-06-17

Publisher (CNA): Rapid7, Inc. · Vendor: belwith-keeler

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

Am I affected?

Timeline

2019-08-22 14:15 UTCPublished CVE record published
2026-06-17 02:38 UTCUpdated Record last modified

belwith-keeler hickory smart ethernet bridge 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-2019-5635?

hickory smart ethernet bridge firmware: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2019-5635 being exploited?

CVE-2019-5635 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-2019-5635 affect?

CVE-2019-5635 affects hickory smart ethernet bridge firmware. Severity is high (CVSS 7.5). A cleartext transmission of sensitive information vulnerability is present in Hickory Smart Ethernet Bridge from Belwith Products, LLC. Captured data reveals that the Hickory Smart Ethernet Bridge device communicates over the network to an

How urgent is CVE-2019-5635?

Priority 39/100. High severity; Remotely exploitable, no login, no user action

References

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