CVE-2020-11447: An issue was discovered on Bell HomeHub 3000 SG48222070 devices

Routine

MEDIUM 4.3MITIGATE

CVE-2020-11447 is a medium-severity flaw (CVSS 4.3) affecting home hub 3000 firmware. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

An issue was discovered on Bell HomeHub 3000 SG48222070 devices. Remote authenticated users can retrieve the serial number via cgi/json-req - this is an information leak because the serial number is intended to prove an actor's physical access to the device.

Why this priority

Public exploit reference

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

Risk facts

CVSS score	4.3 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	0.7% (top 49%)
CISA exploited list	No
Weakness	CWE-200
Published	2023-11-17
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: bell

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

Am I affected?

Timeline

2023-11-17 12:15 UTCPublished CVE record published
2026-06-17 02:50 UTCUpdated Record last modified

bell home hub 3000 firmware MITIGATE

Affected: sg48222070

Fixed in: no fixed release known

Safe to downgrade to: a release before sg48222070

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-2020-11447?

home hub 3000 firmware: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2020-11447 being exploited?

CVE-2020-11447 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-2020-11447 affect?

CVE-2020-11447 affects home hub 3000 firmware. Severity is medium (CVSS 4.3). An issue was discovered on Bell HomeHub 3000 SG48222070 devices. Remote authenticated users can retrieve the serial number via cgi/json-req - this is an information leak because the serial number is intended to prove an actor's physical acc

How urgent is CVE-2020-11447?

Priority 33/100. Public exploit reference

Related CVEs

CVE-2020-11448 MEDIUM 6.1 MITIGATE An issue was discovered on Bell HomeHub 3000 SG48222070 devices

References

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