CVE-2020-9060: Z-Wave devices based on Silicon Labs 500 series chipsets using S2, including but likely not limited to the Zoo

Routine

MEDIUM 6.5MITIGATEMITIGATEMITIGATE

CVE-2020-9060 is a medium-severity flaw (CVSS 6.5) affecting 500 series firmware, zw090-a, fgwpb-111. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Z-Wave devices based on Silicon Labs 500 series chipsets using S2, including but likely not limited to the ZooZ ZST10 version 6.04, ZooZ ZEN20 version 5.03, ZooZ ZEN25 version 5.03, Aeon Labs ZW090-A version 3.95, and Fibaro FGWPB-111 version 4.3, are susceptible to denial of service and resource exhaustion via malformed SECURITY NONCE GET, SECURITY NONCE GET 2, NO OPERATION, or NIF REQUEST messages.

Why this priority

No elevated risk signals yet

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

Risk facts

CVSS score	6.5 (Medium)
Attack vector	Adjacent network
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.5% (top 55%)
CISA exploited list	No
Weakness	CWE-346, CWE-400
Published	2022-01-10
Last modified	2026-06-17

Publisher (CNA): CERT/CC · Vendor: aeotec · fibaro · silabs · zooz

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

Am I affected?

Timeline

2022-01-10 14:10 UTCPublished CVE record published
2026-06-17 03:27 UTCUpdated Record last modified

silabs 500 series 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.

aeotec zw090-a MITIGATE

Affected: 3.95

Fixed in: no fixed release known

Safe to downgrade to: a release before 3.95

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.

fibaro fgwpb-111 MITIGATE

Affected: 4.3

Fixed in: no fixed release known

Safe to downgrade to: a release before 4.3

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.

zooz zen20 MITIGATE

Affected: 5.03

Fixed in: no fixed release known

Safe to downgrade to: a release before 5.03

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.

zooz zen25 MITIGATE

Affected: 5.03

Fixed in: no fixed release known

Safe to downgrade to: a release before 5.03

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.

zooz zst10 MITIGATE

Affected: 6.04

Fixed in: no fixed release known

Safe to downgrade to: a release before 6.04

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-2020-9060?

500 series firmware: mitigate or apply the listed mitigation; zw090-a: mitigate or apply the listed mitigation; fgwpb-111: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2020-9060 being exploited?

CVE-2020-9060 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-2020-9060 affect?

CVE-2020-9060 affects 500 series firmware, zw090-a, fgwpb-111. Severity is medium (CVSS 6.5). Z-Wave devices based on Silicon Labs 500 series chipsets using S2, including but likely not limited to the ZooZ ZST10 version 6.04, ZooZ ZEN20 version 5.03, ZooZ ZEN25 version 5.03, Aeon Labs ZW090-A version 3.95, and Fibaro FGWPB-111 versi

How urgent is CVE-2020-9060?

Priority 34/100. No elevated risk signals yet.

Related CVEs

CVE-2020-9061 MEDIUM 6.5 MITIGATE MITIGATE Z-Wave devices using Silicon Labs 500 and 700 series chipsets, including but not likely limited to the SiLabs
CVE-2020-9059 MEDIUM 6.5 MITIGATE MITIGATE Z-Wave devices based on Silicon Labs 500 series chipsets using S0 authentication are susceptible to uncontroll
CVE-2020-9058 HIGH 8.1 MITIGATE MITIGATE Z-Wave devices based on Silicon Labs 500 series chipsets using CRC-16 encapsulation, including but likely not

References

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