Security readout for executives and security teams
Plain-English summary
This is a Bluetooth stack parsing bug in BlueKitchen BTstack before 1.8.1. A nearby attacker who can pair over Bluetooth Classic may trigger reads past packet boundaries, potentially causing device crashes and, per the description, possible information disclosure. Business urgency is limited by proximity and pairing requirements.
Executive priority
Treat as a low-priority but real maintenance item. Patch during normal firmware or dependency update cycles, prioritizing devices exposed to untrusted pairing environments.
Technical view
CVE-2026-28527 is a CWE-125 out-of-bounds read in AVRCP Controller GET_PLAYER_APPLICATION_SETTING_ATTRIBUTE_TEXT and VALUE_TEXT handling. Crafted VENDOR_DEPENDENT responses over a paired Bluetooth Classic connection can make affected handlers read beyond packet limits. The supplied CVSS is 3.5 low with adjacent attack vector and low availability impact.
Likely exposure
Exposure is most likely in embedded, IoT, audio, or device products that include BlueKitchen BTstack before 1.8.1 and enable Bluetooth Classic AVRCP Controller behavior.
Exploitation context
The source bundle does not show KEV listing or active exploitation. Exploitation requires a nearby Bluetooth attacker and a paired Bluetooth Classic connection, with user interaction indicated by the supplied CVSS vector.
Researcher notes
Evidence is limited to the CVE bundle, BTstack 1.8.1 release reference, and VulnCheck advisory reference. Do not assume broader product impact without confirming BTstack use and version in downstream firmware.
Mitigation direction
- Upgrade BlueKitchen BTstack to version 1.8.1 or later where applicable.
- Check vendor firmware advisories for products embedding BTstack.
- Limit Bluetooth pairing to trusted devices where operationally feasible.
- Disable unused Bluetooth Classic or AVRCP Controller functionality if supported.
Validation and detection
- Inventory products and firmware that embed BlueKitchen BTstack.
- Confirm BTstack versions are 1.8.1 or later.
- Verify whether Bluetooth Classic AVRCP Controller functionality is enabled.
- Review crash logs for Bluetooth or AVRCP parsing failures.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CWE-125: Exact CWE lookup
Use the exact CWE identifier as the starting point before reviewing related ATT&CK behavior. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupCVE-2026-28527 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- Low
- CVSS
- 3.5 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
SSVC decision data
CVSS vector scores
2 official scoresWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:A/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L2.11.4VulnCheckCVSS:4.0/AV:A/AC:L/AT:P/PR:N/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N——VulnCheckVulnerability scoring details
Base CVSS 4.0 score
2.1LowVector: CVSS:4.0/AV:A/AC:L/AT:P/PR:N/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N
Base CVSS 3.1 score
3.5LowVector: CVSS:3.1/AV:A/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L
Vulnerability timeline
Timeline events are normalized from CVE metadata, CNA source timelines, ADP timelines, and KEV metadata when present.
- CVE reservedCVE Program
The CVE ID was reserved by the assigning CNA.
- CVE publishedCVE Program
The CVE record was published.
- CVE updatedCVE Program
The CVE record metadata indicates this as the latest update time.
ADP provider summaries
Source materials
- CVE List V5 sourceCVE List V5
- https://github.com/bluekitchen/btstack/releases/tag/v1.8.1CVE reference, VulnCheck · release-notes, patch
- https://www.vulncheck.com/advisories/bluekitchen-btstack-avrcp-controller-get-player-application-setting-text-handlers-oob-readCVE reference, VulnCheck · third-party-advisory
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Out-of-bounds Read
Out-of-bounds Read represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.