CVE-2025-20702Public exploit

Device takeover via exposed RACE debug commands

Published Aug 4, 2025 · Updated Feb 26, 2026

Missing authentication in the RACE protocol in Airoha Bluetooth audio SDK allows physically proximate attackers to gain device privileges. Factory-debug handlers accept unauthenticated RACE commands that read or write arbitrary RAM and read or rewrite flash memory. Bluetooth range is sufficient, with no pairing or user interaction required, enabling data extraction, persistent firmware modification, and device takeover.

CVSS severity8.8
High
EPSS probability11.25%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Missing authentication in the RACE protocol in Airoha Bluetooth audio SDK allows physically proximate attackers to gain device privileges. Factory-debug handlers accept unauthenticated RACE commands that read or write arbitrary RAM and read or rewrite flash memory. Bluetooth range is sufficient, with no pairing or user interaction required, enabling data extraction, persistent firmware modification, and device takeover.

The record

CVE
CVE-2025-20702
Published
Aug 4, 2025
Updated
Feb 26, 2026
Vendor
Airoha Technology Corp.
Product
AB156x, AB157x, AB158x, AB159x series, AB1627
Classifications
CWE-306
Attack vector
adjacent
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 4, 2025CVE publishedPublication date reported by the CVE source.
  2. Feb 26, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=Airoha AB1561x/AB1562x/AB1563x SDK v3.3.1 and earlier
  2. Affected versionversion=Airoha IoT SDK for BT audio v5.5.0 and earlier

What conditions does exploitation require?

Attack vectoradjacent
Required privilegesunauthenticated

What is affected?

Airoha Technology Corp. · AB156x, AB157x, AB158x, AB159x series, AB1627version=Airoha AB1561x/AB1562x/AB1563x SDK v3.3.1 and earlier; version=Airoha IoT SDK for BT audio v5.5.0 and earlier

Published CVSS scores

8.8CISACVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectoradjacent
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-306Missing Authentication for Critical Function

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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