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CVE-2026-19739

🗓️ 11 Oct 2026 17:15:06Reported by zephyrType 
cve
 cve
🔗 web.nvd.nist.gov👁 15 Views

Bluetooth LE controller leaks an RX node during Connection Update, causing DoS.

Related
Detection
Affected
Refs
ReporterTitlePublishedViews
Family
circl
Circl
CVE-2026-19739
11 Oct 202617:27
–circl
cvelist
Cvelist
CVE-2026-19739 Bluetooth LE controller leaks a retained RX node when an unexpected LL Control PDU arrives during a Connection Update
11 Oct 202617:15
–cvelist
euvd
EUVD
EUVD-2026-97108
11 Oct 202617:15
–euvd
nvd
NVD
CVE-2026-19739
11 Oct 202618:16
–nvd
ptsecurity
Positive Technologies
PT-2026-110226
11 Oct 202600:00
–ptsecurity
Vulners
Node
[
  {
    "vendor": "zephyrproject",
    "product": "zephyr",
    "collectionURL": "https://github.com/zephyrproject-rtos/zephyr",
    "packageName": "zephyr",
    "defaultStatus": "unaffected",
    "programFiles": [
      "subsys/bluetooth/controller/ll_sw/ull_llcp_conn_upd.c"
    ],
    "programRoutines": [
      {
        "name": "llcp_lp_cu_rx"
      },
      {
        "name": "llcp_rp_cu_rx"
      }
    ],
    "versions": [
      {
        "version": "3.4.0",
        "status": "affected",
        "lessThan": "4.5.0",
        "versionType": "semver"
      }
    ]
  }
]

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11 Oct 2026 18:16Current
5.9Medium risk
Vulners AI Score5.9
CVSS 3.16.5
15