Out-of-bounds Read in Bluekitchen Gmbh Btstack
CVE-2026-28528
BlueKitchen BTstack versions prior to 1.8.1 contain an out-of-bounds read vulnerability in the AVRCP Browsing Target GET_FOLDER_ITEMS handler that fails to validate packet boundaries and attribute count data. An attacker with a paired Bluetooth Classic connection can exploit insufficient bounds checking on the attr_id parameter to cause crashes and corrupt attribute bitmap state.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 4.6 (Medium). Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:L.
EPSS exploit prediction
EPSS: 0.002 (10.8th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 11th percentile — 10.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.001 · newest: 0.002 · change: +0.001
Affected products
- Bluekitchen Gmbh Btstack — versions 0
- Bluekitchen-Gmbh Btstack
Weakness classification (CWE)
References
- github.com/bluekitchen/btstack/releases/tag/v1.8.1 (release-notes, Release Notes, patch)
- www.vulncheck.com/advisories/bluekitchen-btstack-avrcp-browsing-target-get-fold… (Third Party Advisory, third-party-advisory)
Frequently asked questions
- What is CVE-2026-28528?
- CVE-2026-28528 is a medium-severity vulnerability in Bluekitchen Gmbh Btstack, classified under Out-of-bounds Read. CVSS score: 4.6/10. Published 2026-03-30.
- How severe is CVE-2026-28528?
- Medium severity. CVSS v3 base score is 4.6 out of 10.