CVE-2021-26340

lowpriority · track · 34EPSS 0.002 · 16 %ileEUUS
grimoire priorityP3 · Track
Exploitable?
—
no known exploitation
Likely / severe?
0.25% (16th) EPSS
CVSS 3.6 · low
Is it mine?
106 products
Check your exposure
Who says so?
3 sources
cnnvd · enisa_euvd · nvd

EPSS · scored 2026-10-27

A malicious hypervisor in conjunction with an unprivileged attacker process inside an SEV/SEV-ES guest VM may fail to flush the Translation Lookaside Buffer (TLB) resulting in unexpected behavior inside the virtual machine (VM).

01

cvss

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

8.4
010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · low–high · 3.6–8.4

v2.03.6lowAV:L/AC:L/Au:N/C:P/I:P/A:Nprimary · NVD / NIST USexploitability 3.9 · impact 4.9
v3.18.4highCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:Nprimary · NVD / NIST USexploitability 2 · impact 5.8
v3.17.7highCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N/E:Usecondary · CVSS-BT (t0sche)
02

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-1190USLLM-inferred
03

affected products (106)

Products and version ranges known to be affected.

showing 20 of 106
04

also known as (3)

Other names and identifiers for this entity.

05

sources

Which sources assert this record, and when.

cnnvdenisa_euvdnvdNVDCVE.orgMITRE
published 2021-12-10modified 2026-06-17
06

references (5)

External citations — patches, advisories, analysis.

scry

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