CVE-2019-16651: An issue was discovered on Virgin Media Super Hub 3 (based on ARRIS TG2492) devices

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MEDIUM 5.3REMOTEMITIGATE

CVE-2019-16651 is a medium-severity flaw (CVSS 5.3) affecting super hub 3 firmware. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

An issue was discovered on Virgin Media Super Hub 3 (based on ARRIS TG2492) devices. Because their SNMP commands have insufficient protection mechanisms, it is possible to use JavaScript and DNS rebinding to leak the WAN IP address of a user (if they are using certain VPN implementations, this would decloak them).

Why this priority

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	5.3 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	1.1% (top 33%)
CISA exploited list	No
Weakness	CWE-863
Published	2021-09-20
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: virginmedia

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

Am I affected?

Timeline

2021-09-20 14:15 UTCPublished CVE record published
2026-06-17 02:22 UTCUpdated Record last modified

virginmedia super hub 3 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-2019-16651?

super hub 3 firmware: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2019-16651 being exploited?

CVE-2019-16651 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-2019-16651 affect?

CVE-2019-16651 affects super hub 3 firmware. Severity is medium (CVSS 5.3). An issue was discovered on Virgin Media Super Hub 3 (based on ARRIS TG2492) devices. Because their SNMP commands have insufficient protection mechanisms, it is possible to use JavaScript and DNS rebinding to leak the WAN IP address of a use

How urgent is CVE-2019-16651?

Priority 45/100. Public exploit reference; Remotely exploitable, no login, no user action

References

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