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01 Record

CVE-2026-19740

Bluetooth LE Controller: retained RX node leak and reachable assertion in the PHY Update procedure

MediumPUBLISHEDCNA: zephyr
CNA base score6.5 CVSS v3.xCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
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02 Description

Bluetooth LE Controller: retained RX node leak and reachable assertion in the PHY Update procedure

03 Exploitation and scoring

Exploitation
Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.
SSVC decision
Not assessed by CISA
EPSS probability
Not scored by EPSS
EPSS percentile
Not scored by EPSS
NVD base score
6.5 (CVSS v3.x), scored by the NVD independently of the CNA.
NVD CVSS vector
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
NVD analysis status
Received. NVD last modified this record on 2026-10-11.
Red Hat severity
No Red Hat rating. Red Hat rates the CVEs that affect its products.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published
2026-10-11 17:15Z4 HR AGO
Last updated
2026-10-11 17:15Z4 HR AGO
Reserved
2026-08-13
Assigning CNA
zephyr
Record state
PUBLISHED
Severity
Medium (CVSS 6.5)
CNA CVSS vector
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weaknesses
  • CWE-401Missing Release of Memory after Effective LifetimeVariant
  • CWE-459Incomplete CleanupBase
  • CWE-617Reachable AssertionBase
  • CWE-772Missing Release of Resource after Effective LifetimeBase
Data version
5.2
Document digest
637d99ae38e992b0699f4c1d051d8393dad7455b63e8e72453556469839e0078

05 Affected products

VendorProductVersionsPlatforms
zephyrprojectzephyr3.4.0 to < 4.5.0—

06 References