SB2026090792 - Information disclosure in ESP-IDF
Published: September 7, 2026
Security Bulletin ID
SB2026090792
CSH Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Adjecent network
Highest impact
Information disclosure
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Out-of-bounds read (CVE-ID: CVE-2026-81508)
CWE-ID: CWE-125 - Out-of-bounds read
CVSSv4: 5.3 [CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N]
The vulnerability allows a remote attacker to disclose limited heap contents.
The vulnerability exists due to an out-of-bounds read in the Bluedroid A2DP sink media-packet handler (btc_a2dp_sink_handle_inc_media) when processing malformed A2DP media packets. A remote attacker can send a malformed media packet to read adjacent heap memory.
Only builds with BlueDroid Classic Bluetooth and A2DP sink support enabled are affected.
Remediation
Install update from vendor's website.