CVE-2021-42016

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

0.62% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 49.8% of scored records. A rank, not a probability.

NVD base score

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

NVD CVSS vector

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

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

2022-03-08 11:31Z4 YR AGO

Last updated

2025-08-12 11:10Z1 YR AGO

Reserved

2021-10-06

Assigning CNA

siemens

Record state

PUBLISHED

Severity

High (CVSS 7.5)

CNA CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N/E:P/RL:O/RC:C

Weaknesses

• CWE-208Observable Timing DiscrepancyBase
• CWE-203Observable DiscrepancyBase

Data version

5.1

Document digest

aecde3715f15771d2b7e523d9b70285a64603405082e823594bc9bc15f1072ba

• cert-portal.siemens.comhttps://cert-portal.siemens.com/productcert/pdf/ssa-256353.pdf
• cert-portal.siemens.comhttps://cert-portal.siemens.com/productcert/html/ssa-256353.html