CVE-2024-11857: Realtek Bluetooth HCI Adaptor - Privilege Escalation

Severity: high (CVSS 7.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.2% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2025-06-02 · updated 2026-06-17
Weakness: CWE-59

Description

Bluetooth HCI Adaptor from Realtek has a Link Following vulnerability. Local attackers with regular privileges can create a symbolic link with the same name as a specific file, causing the product to delete arbitrary files pointed to by the link. Subsequently, attackers can leverage arbitrary file deletion to privilege escalation.

Affected products

Realtek Bluetooth HCI Adaptor: before 1.1.73.1 — fixed in 1.1.73.1

How to fix

Upgrade to a fixed version: Realtek Bluetooth HCI Adaptor 1.1.73.1. Check the vendor advisory for mitigations.

References

https://www.twcert.org.tw/en/cp-139-10161-fa1b5-2.html
https://www.twcert.org.tw/tw/cp-132-10160-76012-1.html

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