Touchlink authentication bypass due to packets processed after timeout or out of range in Ember ZNet
Priority MEDIUM 50CWE-940Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-772.
Summary
TouchLink packets processed after timeout or out of range due to Operation on a Resource after Expiration and Missing Release of Resource after Effective Lifetime may allow a device to be added outside of valid TouchLink range or pairing duration This issue affects Ember ZNet 7.1.x from 7.1.3 through 7.1.5; 7.2.x from 7.2.0 through 7.2.3; Version 7.3 and later are unaffected
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00687 52nd percentileScored 2026-11-07
Fix Fixed Ember ZNet (Silicon Labs): 7.3.0
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- Yes
- Technical impact
- Total
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 | Ember ZNet | 7.1.3 – 7.1.5; 7.2.0 – 7.2.3 | 7.3.0 | Patch available | CNA |
- Ember ZNet Vendorsilabs.com Affected 7.1.3 – 7.1.5; 7.2.0 – 7.2.3 Fixed in 7.3.0 Patch available CNA
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:silabs:emberznet:*:*:*:*:*:*:*:* | 7.1.3 – 7.1.5; 7.2.0 – 7.2.3 | Vulnerable | silabs.com |
- cpe:2.3:a:silabs:emberznet:*:*:*:*:*:*:*:* Versions 7.1.3 – 7.1.5; 7.2.0 – 7.2.3 Vulnerable ·silabs.com
Remediation
- Fix · CNA Ember ZNet (Silicon Labs) Fixed in 7.3.0
Timeline
- 2026-10-02 Threatist record created from CVE-2023-41094
- 2026-10-03 Alias added: GHSA-jf7p-xvx5-8827
- 2026-10-05 EPSS moved to the 50th–90th percentile
References
More silabs.com Emberznet vulnerabilities
- TI-2022-08741 Malformed Zigbee packet causes Assert in EmberZNet 7.0.0 or earlier CVSS 3.1CRITICAL 9.8
- TI-2023-28047 Silicon Labs EFR32xxx parts with classic key storage do not use hardware accelerated AES-CCM CVSS 3.1CRITICAL 9.8
- TI-2022-08742 Malformed Zigbee packet causes Assert in EmberZNet 7.0.1 or earlier CVSS 3.1HIGH 7.5
- TI-2023-28049 Potential DoS for EFR32xxx parts in high traffic environments due to null buffer dereference / crash CVSS 3.1HIGH 7.5
- TI-2023-28048 Potential DoS due to BusFault and Assert in Ember ZNet legacy packet buffer CVSS 3.1HIGH 7.5
- TI-2026-34744 Simple Metering GetProfileResponse interval-bounds bug in EmberZNet v9.0.2 CVSS 4.0HIGH 7.1
Sources
- CVE-2023-41094 · CVE Program
- CVE-2023-41094 · NVD
- FIRST EPSS
- GHSA-jf7p-xvx5-8827 · 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