ESF-IDF: Heap Out-of-Bounds Read in Bluedroid A2DP Sink Media Packet Processing

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-81508
StatePUBLISHED
AssignerGitHub_M
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-09-24 18:18:57 UTC
Updated2026-09-25 13:17:26 UTC
DescriptionESF-IDF is the Espressif Internet of Things (IOT) Development Framework. In 5.5.5, 6.0.1, and 6.1, the BlueDroid A2DP sink function btc_a2dp_sink_handle_inc_media() reads a timestamp field from the received media buffer before validating that the packet layout contains the field. A paired BR/EDR audio source within radio range can send a malformed A2DP media packet to a build with BlueDroid Classic Bluetooth and A2DP sink support enabled, causing an out-of-bounds read into adjacent heap memory and limited disclosure of heap contents. Arbitrary memory disclosure and code execution are not established.

Risk And Classification

Primary CVSS: v3.1 4.3 MEDIUM from [email protected]

CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

EPSS: 0.002130000 probability, percentile 0.104120000 (date 2026-09-27)

Problem Types: CWE-125 | CWE-125 CWE-125: Out-of-bounds Read

VersionSourceTypeScoreSeverityVector
3.1[email protected]Secondary4.3MEDIUMCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
3.1CNADECLARED4.3MEDIUMCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

CVSS v3.1 Breakdown

Attack Vector
Adjacent
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
None
Availability
None

CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Espressif Esp-idf affected = 6.1 Not specified
CNA Espressif Esp-idf affected = 6.0.1 Not specified
CNA Espressif Esp-idf affected = 5.5.5 Not specified

References

ReferenceSourceLinkTags
github.com/espressif/esp-idf/commit/85d56bcd266117e0fe6a6b75511c8e122fda... [email protected] github.com
github.com/espressif/esp-idf/commit/6cb20db4dfeee81314d0c55acb82f3f0e767... [email protected] github.com
github.com/espressif/esp-idf/security/advisories/GHSA-xcpr-5mqp-9qvv [email protected] github.com
github.com/espressif/esp-idf/commit/ca55d63de82e41e2c672bfd2b707fc80911f... [email protected] github.com
github.com/espressif/esp-idf/commit/0d118139ff8b7aa87b656c2f4a6421ecaa1f... [email protected] github.com
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