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CVE-2026-19291— Bluetooth re-pairing can use a lower security level than previous

Quick assessment

Affected
silabs.com WiseConnect
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.

Silicon WiseConnect是Silicon公司的一款智能连接管理软件。 Silicon WiseConnect 4.0.0版本至4.1.0之前版本和2.0.0版本至2.14.0之前版本存在授权问题漏洞，该漏洞源于蓝牙与现有设备重新配对时可能使用较低的安全级别，可能导致攻击者绕过身份验证并对设备进行未授权访问。

CVSS 8.8 · High EPSS 0.35% · P26

Possible ATT&CK Techniques 1 AI

T1557.002 · ARP Cache Poisoning

Affected Version Matrix 2

VendorProduct Version RangeStatus
silabs.com WiseConnect 4.0.0< 4.1.0 affected
2.0.0< 2.14.0 affected
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I. Basic Information for CVE-2026-19291

Vulnerability Information
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Vulnerability Title
Bluetooth re-pairing can use a lower security level than previous
Source: CVE Program / CVE List V5
Vulnerability Description
Bluetooth re-pairing with an existing device can use a lower security level. RS9116W and SiWx91x impacted. See V3 in the BLERP paper linked below.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
使用欺骗进行的认证绕过
Source: CVE Program / CVE List V5
Vulnerability Title
Silicon WiseConnect 授权问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Silicon WiseConnect是Silicon公司的一款智能连接管理软件。 Silicon WiseConnect 4.0.0版本至4.1.0之前版本和2.0.0版本至2.14.0之前版本存在授权问题漏洞，该漏洞源于蓝牙与现有设备重新配对时可能使用较低的安全级别，可能导致攻击者绕过身份验证并对设备进行未授权访问。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
silabs.com WiseConnect 4.0.0 ~ 4.1.0 -

II. Public POCs for CVE-2026-19291

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III. Intelligence Information for CVE-2026-19291

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Security Blog Posts for CVE-2026-19291 (1)

Other References for CVE-2026-19291 (1)

Same Patch Batch · silabs.com · 2026-08-13 · 9 CVEs total

CVE-2026-16101 8.8 HIGH forced re-pairing with already bonded device
CVE-2026-19292 8.8 HIGH Bluetooth re-pairing with legitimate device can use lower security level
CVE-2026-19293 8.8 HIGH SMP security request
CVE-2026-65935 7.6 HIGH Bypassing passkey entry in legacy pairing
CVE-2026-65934 7.1 HIGH BT122 plaintext pause encryption request causes DOS
CVE-2026-65932 5.3 MEDIUM BT122 stops advertising
CVE-2026-65936 5.3 MEDIUM RS9116W/SiWx917 malformed packet with increased length field causes memory leak
CVE-2026-65933 5.3 MEDIUM BT122 malformed packet with increased length field causes memory leak

IV. Related Vulnerabilities

Same product: WiseConnect
Same vendor: silabs.com
Same weakness: CWE-290

V. Comments for CVE-2026-19291

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