P4Verified

CVE-2021-34866: linux kernel from 5.8 (inclusive), before 5.10.62 (exclusive), from 5.11 (inclusive), before 5.13.14 (exclusive); +9…

CVE-2021-34866. CVSS 3.1 base score 7.8 (HIGH, NVD). EPSS 0.00972 (percentile 0.60812), scored 2026-10-08.

Affected technology

linux kernel · from 5.8 (inclusive), before 5.10.62 (exclusive)
linux

linux kernel · from 5.11 (inclusive), before 5.13.14 (exclusive)
linux

h410c firmware · Version not applicable in the source CPE
netapp

h300s firmware · Version not applicable in the source CPE
netapp

h500s firmware · Version not applicable in the source CPE
netapp

h700s firmware · Version not applicable in the source CPE
netapp

h300e firmware · Version not applicable in the source CPE
netapp

h500e firmware · Version not applicable in the source CPE
netapp

h700e firmware · Version not applicable in the source CPE
netapp

h410s firmware · Version not applicable in the source CPE
netapp

Kernel · 5.14-rc3
Linux

Component: Not specified by the source

Attack conditions (NVD, CVSS 3.1): Local · Low privileges required · No user interaction required

What an attacker can do

Local attackers can escalate privileges on affected installations of Linux Kernel 5.14-rc3. NVD’s CVSS 3.1 assessment (base score 7.8/10) rates confidentiality, integrity and availability impact as high.

Published 2026-10-09 03:15:28.180063+00:00

CWE: CWE-843
CCR priority: 31.4 /100 (P4)
CVSS 3.1: 7.8 /10 · CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H · NVD
EPSS: 0.00972 · percentile 0.60812 · 2026-10-08
KEV: no

Provenance

GitHub Advisory Database · Source record · observed 2026-10-09 03:17:07.463462+00:00 UTC
NVD CVE API 2.0 · Source record · observed 2026-10-09 03:13:32.966430+00:00 UTC

Stable permalink: https://cybercodered.org/item/cve-cve-2021-34866.html