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CVE-2025-66409

ESF-IDF has an Out-of-Bounds Read in ESP32 Bluetooth AVRCP Command Handling

Published: Dec 2, 2025Updated: Feb 13, 2026 Sources: CVE List NVDCWE-125
NVD MITRE
9.1CVSSCRITICAL
EPSS Score
0.5%
Top 59.3%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

Description

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.

CVSS Vector Breakdown

AV:NAC:LPR:NUI:NS:UC:HI:NA:H
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:HConfidentiality
High
I:NIntegrity
None
A:HAvailability
High
Open in CVSS calculator →

Weaknesses

CWE-125

Affected Products

esp-idfespressif
LibraryLibrary
OSS Libraries / generic-library
espressifcommercialCNOperating Systemsaka esp-idf, arduino-esp32, esp8266 nonos sdk, espressif

Attack Graph

Products CVE Techniques Tactics

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Exploitability

Official Patch Available

MITRE ATT&CK

1 technique
Collection
View detailed technique mapping

References

https://github.com/espressif/esp-idf/commit/075ed218cadb8088155521cd8a795d8a626519fb
github.com
https://github.com/espressif/esp-idf/commit/2f788e59ee361eee230879ae2ec9cf5c893fe372
github.com
https://github.com/espressif/esp-idf/commit/798029129a71c802cff0e75eb59f902bca8f1946
github.com
and 4 more references View all →

Timeline

Published
Dec 2, 2025
Last Updated
Feb 13, 2026

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