CVE-2026-81508GHSA-xcpr-5mqp-9qvv
esp-idf: ESF-IDF: Heap Out-of-Bounds Read in Bluedroid A2DP Sink Media Packet Processing
espressif esp-idf
CVSS
4.3MediumExploitationNo known exploitationNot in CISA KEV, which does not prove it is unexploitedCISA KEV
Exploit odds (EPSS)0.21%Chance of exploitation activity in the next 30 days, higher than 11% of CVEs. Scored 23 Oct 2026FIRST EPSS
Fixed inNone listedNo source names a fixed version. Check the vendor advisory below
What fixes it
No source in this snapshot names a fixed version. The vendor advisories under References are the place to check.
Description
ESF-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.
Text from CVE List
Affected versions 3
- esp-idfaffected: = 6.1CVE List
- esp-idfaffected: = 6.0.1CVE List
- esp-idfaffected: = 5.5.5CVE List
References 5
- github.com/espressif/esp-idf/commit/0d118139ff8b7aa87b656c2f4a6421ecaa1f5939Fixvia CVE List
- github.com/espressif/esp-idf/commit/6cb20db4dfeee81314d0c55acb82f3f0e7679abeFixvia CVE List
- github.com/espressif/esp-idf/commit/85d56bcd266117e0fe6a6b75511c8e122fda29adFixvia CVE List
- github.com/espressif/esp-idf/commit/ca55d63de82e41e2c672bfd2b707fc80911f30ceFixvia CVE List
- github.com/espressif/esp-idf/security/advisories/GHSA-xcpr-5mqp-9qvvAdvisoryvia CVE List