CVE-2026-66279— Dis-connect vulnerability in Connect Stack
Quick assessment
Affected
Silicon Labs Connect SDK
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
在 Connect SDK 4.3.1 及更早版本，以及 Flex SDK 3.7.7 及更早版本中，一条包含无效安全设置的报文可能绕过身份验证，从而导致网络中断。该漏洞不会让攻击者获取网络密钥，也不会破坏数据的机密性。
Possible ATT&CK Techniques 1 AI
T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2026-66279
Vulnerability Information
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Vulnerability Title
Dis-connect vulnerability in Connect Stack
Source: CVE Program / CVE List V5
Vulnerability Description
In Connect SDK 4.3.1 and earlier and Flex SDK 3.7.7 and earlier, a message with invalid security settings may bypass authentication resulting in network disruption. This vulnerability does not allow an attacker to gain the Network Key or otherwise break confidentiality.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
通信信道源的不正确验证
Source: CVE Program / CVE List V5
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| Silicon Labs | Connect SDK | 4.0.0 ~ 4.3.1 | - |
|
II. Public POCs for CVE-2026-66279
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POC
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Vendor Pages for CVE-2026-66279 (1)
Other References for CVE-2026-66279 (1)
-
https://github.com/SiliconLabsSoftware/docs-security-advisories/blob/main/Advisories/500-599/A-00000588.md vendor-advisory permissions-required
Same Patch Batch · Silicon Labs · 2026-10-22 · 8 CVEs total
| CVE-2026-94502 | 7.5 HIGH | Out-of-bounds write in Zigbee Publish Price Matrix handling |
| CVE-2026-85079 | 7.5 HIGH | Out-of-bounds write in Zigbee Simple_Desc_req handling |
| CVE-2026-85080 | 6.0 MEDIUM | Authenticated Denial-of-Service in Zigbee GetGroupMembership Handling |
| CVE-2026-66281 | 6.0 MEDIUM | Authenticated Denial-of-Service in Zigbee Discover Attributes Handling |
| CVE-2026-66282 | 6.0 MEDIUM | Authenticated Denial-of-Service in Zigbee Publish Billing Period |
| CVE-2026-89409 | 5.3 MEDIUM | Unvalidated ZWAVE_CMD_NODES_EXIST May Cause Deletion of End Nodes |
| CVE-2026-89410 | 5.1 MEDIUM | Out-of-bounds read in Z-Wave NCP SPI Handler |
IV. Related Vulnerabilities
Same vendor: Silicon Labs
-
CVE-2026-89410
Out-of-bounds read in Z-Wave NCP SPI Handler -
CVE-2026-89409
Unvalidated ZWAVE_CMD_NODES_EXIST May Cause Deletion of End -
CVE-2026-85079
Out-of-bounds write in Zigbee Simple_Desc_req handling -
CVE-2026-94502
Out-of-bounds write in Zigbee Publish Price Matrix handling -
CVE-2026-66282
Authenticated Denial-of-Service in Zigbee Publish Billing Pe
Same weakness: CWE-940
-
CVE-2026-89409
Unvalidated ZWAVE_CMD_NODES_EXIST May Cause Deletion of End -
CVE-2026-112408
Missing bucket ownership verification in Amazon SageMaker Py -
CVE-2026-102552
Improper verification of the source of a communication chann -
CVE-2026-102551
Improper verification of the source of a communication chann -
CVE-2026-87705
Windows Hyper-V Security Feature Bypass Vulnerability
V. Comments for CVE-2026-66279
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