CVE-2026-5068High· 7.6▾ TwilightA remote, unauthenticated BLE peer can trigger a 2-byte out-of-bounds write in the Bluetooth host during L2CAP LE CoC SDU reassembly. When the application enables segmentation (via chan_ops.alloc_buf) and the chosen RX pool has a user_da…
▾ Twilight zone — High severity, or a signal on a lesser flaw
impact 41.8 · likelihood 0.1 · exploitation 0
Need a working PoC? Pro members can cast a request and our team develops one — it lands right here.
Stakeholder-Specific Vulnerability Categorization from CISA's ADP record at CVE.org: whether exploitation is observed, whether an attack can be automated, and how much of the system is at stake. The CVSS score shown above comes from the assigning CNA record, not NVD.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via CVEORG
Last analysed / modified upstream
0.3%
A remote, unauthenticated BLE peer can trigger a 2-byte out-of-bounds write in the Bluetooth host during L2CAP LE CoC SDU reassembly. When the application enables segmentation (via chan_ops.alloc_buf) and the chosen RX pool has a user_data_size smaller than 2 bytes, the segmentation counter stored in the net_buf user_data area is written out of bounds in l2cap_chan_le_recv_seg (subsys/bluetooth/host/l2cap.c). The observed effects are an AddressSanitizer abort and, without ASan, heap corruption / fatal error.
Zephyr >= 1.14.0 < 4.3.1Refer to the linked advisories for vendor-supplied fixes and affected version ranges.
Connected by shared product, vendor, weakness, or advisory.
CVE-2026-5589Medium· 6.3Out-of-bounds write caused by an integer underflow in the Bluetooth Mesh subsystem.
CVE-2026-5067Critical· 9.8Out-of-bounds read/write in HTTP WebSocket upgrade via non-null-terminated Sec-WebSocket-Key
CVE-2026-5066Medium· 6.3net: sockets: tls: Potential out-of-bounds write/read in socket_op_vtable::connect function
CVE-2026-1678Critical· 9.4dns: memory‑safety issue in the DNS name parser
CVE-2026-10641High· 7.1Out-of-bounds write in Bluetooth HFP Hands-Free CIND indicator parsing (cind_handle_values)
CVE-2026-10644Medium· 4.2Out-of-bounds write in Microchip SERCOM-G1 (PIC32CM-JH) async UART RX with 1-byte buffer