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Threatist priority CRITICAL 0 HIGH 1 MEDIUM 0 LOW 1

Signals Exploited in the wild (KEV) 0 Patch available 2 No fix listed 0 Has CVE 2

Fix status Fixed 2 Partial 0 Will not fix 0 Deferred 0 No fix listed 0

Impact type Code execution 2 Privilege escalation 0 Security bypass 0 Information disclosure 0 Tampering 0 Denial of service 0 Spoofing 0 Cross-site scripting 0 SQL injection 0

Attack vector Network 1 Adjacent network 1 Local 0 Physical 0

Requirements No authentication 2 No user interaction 2

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Weakness (CWE) CWE-787 Out-of-bounds Write 2 CWE-170 Improper Null Termination 1

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Release: zephyrproject-rtos Zephyr 4.3.1 × Clear all filters

TI-2026-04423 CVE-2026-5068

bt: l2cap le coc: remote oob write via seg counter stored in net_buf user_data

Priority LOW 38

A remote, unauthenticated BLE peer can trigger a 2-byte out-of-bounds write in the Bluetooth host during L2CAP LE CoC SDU reassembly.

CVSS 3.1HIGH 8.8· Adjacent network · No auth · No interaction · EPSS 0.00452 · Published 2026-06-09 · Fixed CWE-787

TI-2026-04422 CVE-2026-5067

Out-of-bounds read/write in HTTP WebSocket upgrade via non-null-terminated Sec-WebSocket-Key

Priority HIGH 82

A remote, unauthenticated attacker can trigger memory corruption in Zephyr's HTTP server WebSocket upgrade path by sending a crafted Sec-WebSocket-Key header.

CVSS 3.1CRITICAL 9.8· Network · No auth · No interaction · EPSS 0.00643 · Published 2026-06-09 · Fixed CWE-170

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