CVE-2026-19774
HighCVSS 7.1Exploitation Probability (EPSS)
Low risk26th percentile - higher than 26% of all known CVEs
Summary
BlueZ A2DP Stack-based Buffer Overflow Remote Code Execution Vulnerability. This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of BlueZ. An attacker must first obtain the ability to pair a malicious Bluetooth device with the target system.
Risk Assessment
A network-adjacent attacker could execute arbitrary code with root privileges, leading to full system compromise. Exploitation requires pairing a malicious Bluetooth device.
Recommendation
Update BlueZ to the latest version. Restrict Bluetooth pairing to trusted devices and disable Bluetooth when not in use.
Other vulnerabilities in BlueZ
See all- CVE-2016-7837High
Buffer overflow in BlueZ 5.41 and earlier allows an attacker to execute arbitrary code via the parse_line function used in some userland utilities.
- CVE-2016-9918High
In BlueZ 5.42, an out-of-bounds read was identified in the 'packet_hexdump' function in the 'monitor/packet.c' source file. This issue can be triggered by processing a corrupted dump file and will result in btmon crash.
- CVE-2016-9917High
In BlueZ 5.42, a buffer overflow was observed in the 'read_n' function in the 'tools/hcidump.c' source file. This issue can be triggered by processing a corrupted dump file, resulting in hcidump crash.
- CVE-2026-80186High
A stack-based buffer overflow vulnerability exists in BlueZ, the Linux Bluetooth protocol stack. A remote user within Bluetooth radio range can send a specially crafted Extended Inquiry Response (EIR) packet that causes a buffer overflow when the target device performs Bluetooth discovery. This vulnerability can lead to a Denial of Service (DoS) by crashing the bluetoothd service and may allow for arbitrary code execution.
- CVE-2026-80185Medium
BlueZ sdp-xml.c type confusion via RegisterProfile(ServiceRecord) can crash bluetoothd (local DoS): a crafted nested ServiceRecord can corrupt the SDP XML parser stack so scalar union data is treated as a sequence pointer, allowing a local caller to crash bluetoothd.
- CVE-2026-75032Medium
A flaw was found in BlueZ. Insufficient validation of packet length fields in GetFolderItems responses within the Audio/Video Remote Control Profile (AVRCP) implementation allows a malicious Bluetooth device within range to cause an out-of-bounds memory read. This vulnerability, affecting the parse_media_element() and parse_media_folder() functions, can lead to a crash of the bluetoothd daemon, resulting in a Denial of Service (DoS). It could also potentially expose sensitive heap memory contents. Exploitation requires user interaction to pair with the malicious device.
- CVE-2026-16473Medium
An off-by-one error in the SBC frame decoder of the sbc library (BlueZ SBC codec) allows a crafted audio payload to trigger a one-byte heap out-of-bounds read. An adjacent Bluetooth attacker can read a single byte of adjacent heap memory.
Original NVD description (English source)
BlueZ A2DP Stack-based Buffer Overflow Remote Code Execution Vulnerability. This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of BlueZ. An attacker must first obtain the ability to pair a malicious Bluetooth device with the target system in order to exploit this vulnerability. The specific flaw exists within the handling of the stream endpoints. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a fixed-length stack-based buffer. An attacker can leverage this vulnerability to execute code in the context of root. Was ZDI-CAN-29429.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS