CVE-2023-1902

highpriority · track · 32EPSS 0.006 · 48 %ileEURUUS

grimoire priorityP2 · Scheduled

Exploitable?

—

no known exploitation

Likely / severe?

0.60% (48th) EPSS

CVSS 8 · high

Is it mine?

3 products

Check your exposure

Who says so?

5 sources

cnnvd · enisa_euvd · fstec_bdu · osv

EPSS · scored 2026-10-27

The bluetooth HCI host layer logic not clearing a global reference to a state pointer after handling connection events may allow a malicious HCI Controller to cause the use of a dangling reference in the host layer, leading to a crash (DoS) or potential RCE on the Host layer.

cvss

Technical severity, 0–10. One row per scoring source.

8.0

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 5.9–8

v3.18highCVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:Hprimary · NVD / NIST USexploitability 2.1 · impact 5.9

v3.18highAV:A/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:Hsecondary · FSTEC (BDU) RU

v3.15.9mediumCVSS:3.1/AV:A/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:Hsecondary · ENISA EU

v3.15.9mediumCVSS:3.1/AV:A/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:Hsecondary · vulnerabilities@zephyrproject.orgexploitability 1.2 · impact 4.7

v3.16.8mediumCVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Hsecondary · OSV

v3.17.3highCVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:Usecondary · CVSS-BT (t0sche)

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Exploitation: poc · Automatable: no · Technical Impact: partialcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-416USprimaryCWE-416USCWE-672USCWE-843US

affected products (3)

Products and version ranges known to be affected.

zephyrproject-rtos Zephyr≤ * ≤3.3enisa_euvdEU
Zephyr Project Zephyr≤ 3.3.0fstec_bduRU
zephyrproject zephyr≤ 3.3.0nvdUScpe:2.3:o:zephyrproject:zephyr:*:*:*:*:*:*:*:*

advisories (1)

Vendor and ecosystem advisories describing this.

CVE-2023-2234BT HCI host union variant confusion2023-07-10vendor · osvUS
Union variant confusion allows any malicious BT controller to execute arbitrary code on the Zephyr host.

also known as (4)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd fstec_bdu osv nvd NVD CVE.org MITRE

published 2023-07-10modified 2026-06-17

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+12230 more

references (4)

External citations — patches, advisories, analysis.

scry

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