CVE-2022-30036: MA Lighting grandMA2 Light has a password of root for the root account

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HIGH 8.8MITIGATE

CVE-2022-30036 is a high-severity flaw (CVSS 8.8) affecting grandma2 light firmware. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

MA Lighting grandMA2 Light has a password of root for the root account. NOTE: The vendor's position is that the product was designed for isolated networks. Also, the successor product, grandMA3, is not affected by this vulnerability.

Why this priority

High severity
Public exploit reference

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

Risk facts

CVSS score	8.8 (High)
Attack vector	Adjacent network
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.8% (top 44%)
CISA exploited list	No
Weakness	CWE-798
Published	2022-08-21
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: malighting

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

Am I affected?

Timeline

2022-08-21 04:15 UTCPublished CVE record published
2026-06-17 04:43 UTCUpdated Record last modified

malighting grandma2 light 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-2022-30036?

grandma2 light firmware: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2022-30036 being exploited?

CVE-2022-30036 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-2022-30036 affect?

CVE-2022-30036 affects grandma2 light firmware. Severity is high (CVSS 8.8). MA Lighting grandMA2 Light has a password of root for the root account. NOTE: The vendor's position is that the product was designed for isolated networks. Also, the successor product, grandMA3, is not affected by this vulnerability.

How urgent is CVE-2022-30036?

Priority 50/100. High severity; Public exploit reference

References

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