CVE-2026-28528: BlueKitchen BTstack versions prior to 1.8.1 contain an out-of-bounds read vulnerability in the AVRCP Browsing

Q: How do I fix CVE-2026-28528?

btstack: upgrade to 1.8.1. Exact commands for each OS are on this page.

Q: Is CVE-2026-28528 being exploited?

CVE-2026-28528 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2026-28528 affect?

CVE-2026-28528 affects btstack. Severity is medium (CVSS 4.6). 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 Bluet

Q: How urgent is CVE-2026-28528?

Priority 17/100. No elevated risk signals yet.

Routine

MEDIUM 4.6UPGRADE

CVE-2026-28528 is a medium-severity flaw (CVSS 4.6) affecting btstack. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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.

Why this priority

No elevated risk signals yet

A fixed release or distro patch exists.

Risk facts

CVSS score	4.6 (Medium)
Attack vector	Adjacent network
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	0.1% (top 97%)
CISA exploited list	No
Weakness	CWE-125, CWE-758
Published	2026-03-30
Last modified	2026-07-14

Publisher (CNA): VulnCheck · Vendor: bluekitchen-gmbh

Last updated 2026-07-14 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-03-30 14:16 UTCPublished CVE record published
2026-07-14 19:16 UTCUpdated Record last modified

bluekitchen-gmbh btstack UPGRADE

Affected: < 1.8.1

Fixed in: 1.8.1

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy btstack || rpm -q btstack || btstack --version

2. UPGRADE to 1.8.1 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade btstack

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade btstack

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-28528?

btstack: upgrade to 1.8.1. Exact commands for each OS are on this page.

Is CVE-2026-28528 being exploited?

CVE-2026-28528 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-28528 affect?

CVE-2026-28528 affects btstack. Severity is medium (CVSS 4.6). 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 Bluet

How urgent is CVE-2026-28528?

Priority 17/100. No elevated risk signals yet.

Software pages

Bluetooth vulnerabilities

Related CVEs

CVE-2026-28527 LOW 3.5 UPGRADE BlueKitchen BTstack versions prior to 1.8.1 contain an out-of-bounds read vulnerability in the AVRCP Controlle
CVE-2026-28526 LOW 3.5 UPGRADE BlueKitchen BTstack versions prior to 1.8.1 contain an out-of-bounds read vulnerability in the AVRCP Controlle

References

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