The Z-Wave specification requires that S2 security can be downgraded to S0 or other less secure protocols, allowing an attacker within radio range during pairing to downgrade and then exploit a different vulnerability (CVE-2013-20003) to intercept and spoof traffic
Published Feb 4, 2022
8.1
HIGHCVSS 3.1
EPSS 0.62%
Description
The Z-Wave specification requires that S2 security can be downgraded to S0 or other less secure protocols, allowing an attacker within radio range during pairing to downgrade and then exploit a different vulnerability (CVE-2013-20003) to intercept and spoof traffic.
Affected products
-
- Version S2StatusaffectedConstraints-
- Version
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | ||||||
|---|---|---|---|---|---|---|---|---|---|
| Silicon Labs | Z-Wave | n/a |
|
Configuration 1
- s2
Running on/with
- n/a
Configuration 2
- s2
Configuration 3
- s2
Configuration 4
- s2
Running on/with
- n/a
Configuration 5
- s2
Running on/with
- n/a
No data.
No Red Hat product state for this CVE.
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
No CVSS v3.0 score for this CVE.
AV:A/AC:L/Au:N/C:P/I:P/A:N
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 2, 2026.
Score over time
2022–2026- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (13 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 2, 2026 | 0.62% (0.00616) | 47.68th | v5 (v2026.06.15) |
| Jun 15, 2026 | 0.61% (0.00607) | 44.18th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.09% (0.00094) | 24.22th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.08% (0.00083) | 37.05th | v3 (v2023.03.01) |
| Feb 8, 2024 | 0.10% (0.00100) | 39.84th | v3 (v2023.03.01) |
| Aug 28, 2023 | 0.07% (0.00074) | 30.43th | v3 (v2023.03.01) |
| Jul 18, 2023 | 0.07% (0.00066) | 27.21th | v3 (v2023.03.01) |
| Mar 9, 2023 | 0.06% (0.00060) | 23.29th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.05% (0.00053) | 19.43th | v3 (v2023.03.01) |
| Mar 6, 2023 | 0.89% (0.00885) | 27.89th | v2 (v2022.01.01) |
| Sep 10, 2022 | 0.89% (0.00885) | 26.24th | v2 (v2022.01.01) |
| Apr 1, 2022 | 0.89% (0.00885) | 24.24th | v2 (v2022.01.01) |
| Feb 8, 2022 | 0.89% (0.00885) | 10.79th | v2 (v2022.01.01) |
References (2)
- https://community.silabs.com/s/share/a5U1M000000knqNUAQ/updated-your-zwave-smart-locks-are-safe-and-secure x_refsource_CONFIRMThird Party Advisory
- https://www.pentestpartners.com/security-blog/z-shave-exploiting-z-wave-downgrade-attacks/ x_refsource_MISCExploitThird Party Advisory
| Link | Providers | Tags |
|---|---|---|
| https://community.silabs.com/s/share/a5U1M000000knqNUAQ/updated-your-zwave-smart-locks-are-safe-and-secure | x_refsource_CONFIRMThird Party Advisory | |
| https://www.pentestpartners.com/security-blog/z-shave-exploiting-z-wave-downgrade-attacks/ | x_refsource_MISCExploitThird Party Advisory |
Change history (0)
No recorded changes yet.