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CVE-2026-5590: zephyr through 4.3.0 (inclusive); +1 more affected products
CVE-2026-5590. CVSS 3.1 base score 5.3 (MEDIUM, NVD). EPSS 0.00274 (percentile 0.18451), scored 14-Oct-2026.
Affected technology
zephyr · through 4.3.0 (inclusive)
zephyrproject
Zephyr · * to before 4.3.1
zephyrproject-rtos
Component: Not specified by the source
Attack conditions (Vendor/CNA, CVSS 3.1): Network (remote) · Low privileges required · No user interaction required
Attack conditions (NVD, CVSS 3.1): Network (remote) · Low privileges required · No user interaction required
What an attacker can do
Vendor/CNA’s CVSS 3.1 assessment (base score 6.4/10) rates confidentiality and integrity impact as low; availability impact as high. NVD’s CVSS 3.1 assessment (base score 5.3/10) rates confidentiality and integrity impact as none; availability impact as high. The description does not specify what an attacker can achieve beyond these rated impacts.
- CWE
- CWE-476
- CCR priority
- 21.3 /100 (P4)
- CVSS 3.1
- 5.3 /10 · CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H · NVD
- EPSS
- 0.00274 · percentile 0.18451 · 2026-10-14
- KEV
- no
Provenance
- NVD CVE API 2.0 · Source record · observed 2026-10-15 23:47:27.763190+00:00 UTC
Stable permalink: https://cybercodered.org/item/cve-cve-2026-5590.html