CVE-2021-40170

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

0.88% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 56.6% of scored records. A rank, not a probability.

NVD base score

6.8 (CVSS v3.x), scored by the NVD independently of the CNA.

NVD CVSS vector

CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:H/A:H

NVD analysis status

Modified. NVD last modified this record on 2026-06-17.

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.

Published

2021-12-15 06:47Z4 YR AGO

Last updated

2024-08-04 02:27Z2 YR AGO

Reserved

2021-08-29

Assigning CNA

mitre

Record state

PUBLISHED

Severity

Not rated by the issuing CNA

CNA CVSS vector

Not published by the issuing CNA

Weaknesses

• CWE-294Authentication Bypass by Capture-replayBase

Data version

5.1

Document digest

244834cc8ddae8a7e442d3b10fda4183965442da7ed86b35b02f3e4cc6002421

• www.securitashome.sehttps://www.securitashome.se/product.html/securitashomex_refsource_MISC
• www.diva-portal.orghttps://www.diva-portal.org/smash/get/diva2:1600180/FULLTEXT04.pdfx_refsource_CONFIRM