CVE-2025-66409

moderate-risk
Published 2025-12-02

ESF-IDF is the Espressif Internet of Things (IOT) Development Framework. In 5.5.1, 5.4.3, 5.3.4, 5.2.6, 5.1.6, and earlier, when AVRCP is enabled on ESP32, receiving a malformed VENDOR DEPENDENT command from a peer device can cause the Bluetooth stack to access memory before validating the command buffer length. This may lead to an out-of-bounds read, potentially exposing unintended memory content or causing unexpected behavior.

Do I need to act?

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0.10% chance of exploitation
EPSS score — low exploit probability
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Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
9
CVSS 9.1/10 Critical
NETWORK / LOW complexity

Affected Products (1)

Affected Vendors

Espressif

References (7)

Patch https://github.com/espressif/esp-idf/commit/075ed218cadb8088155521cd8a795d8a6265...
Patch https://github.com/espressif/esp-idf/commit/2f788e59ee361eee230879ae2ec9cf5c893f...
Patch https://github.com/espressif/esp-idf/commit/798029129a71c802cff0e75eb59f902bca8f...
Patch https://github.com/espressif/esp-idf/commit/999710fccf95ae128fe51b5679d6b7c75c50...
Patch https://github.com/espressif/esp-idf/commit/d5db5f60fc1dcfdd8cd3ee898fdefaa27298...
Patch https://github.com/espressif/esp-idf/commit/daeeba230327176b9627b1caa94acdc54065...
Patch https://github.com/espressif/esp-idf/security/advisories/GHSA-qhf9-vr2h-jh96
36
/ 100
moderate-risk
Severity 31/34 · Critical
Exploitability 0/34 · Minimal
Exposure 5/34 · Minimal