Silicon Labs PC Controller v5.54.0 and Earlier Denial of Service Vulnerability
Priority LOW 28CWE-248Published · Updated
Key facts
- Attack vector
- Adjacent network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-248.
Summary
Malformed S2 Nonce Get Command Class packets can be sent to crash PC Controller v5.54.0 and earlier.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00271 19th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| silabs.com | PC Controller | up to 5.54.0 | — | No fix listed | CNA |
- PC Controller Vendorsilabs.com Affected up to 5.54.0 Fixed in — No fix listed CNA
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:silabs:z-wave_pc-based_controller:*:*:*:*:*:*:*:* | up to 5.54 | Vulnerable | silabs.com |
- cpe:2.3:a:silabs:z-wave_pc-based_controller:*:*:*:*:*:*:*:* Versions up to 5.54 Vulnerable ·silabs.com
Remediation
No fixed version listed by the sources yet.
Fixed in the same release
Records fixed by the same vendor advisory or release, as the CNA lists them.
- Advisory ·
silabs.com PC Controller — community.silabs.com/068Vm000001HdNm
2 records Highest priority Priority LOW 2 LOW
Other records, highest priority first
- TI-2023-05988 Silicon Labs PC Controller Denial of Service VulnerabilityPriority LOW 28
Timeline
- 2026-10-02 Threatist record created from CVE-2023-6640
- 2026-10-03 Alias added: GHSA-q8rx-w8h7-j8xw
References
More silabs.com Z-wave Pc-based Controller vulnerabilities
- TI-2023-05988 Silicon Labs PC Controller Denial of Service Vulnerability CVSS 3.1MEDIUM 6.5
Sources
- CVE-2023-6640 · CVE Program
- CVE-2023-6640 · NVD
- FIRST EPSS
- GHSA-q8rx-w8h7-j8xw · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences