CVE-2021-31895

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

2.28% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 81.6% of scored records. A rank, not a probability.

NVD base score

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

NVD CVSS vector

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

2021-07-13 11:02Z5 YR AGO

Last updated

2025-10-14 09:14Z10 MO AGO

Reserved

2021-04-29

Assigning CNA

siemens

Record state

PUBLISHED

Severity

High (CVSS 8.1)

CNA CVSS vector

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

Weaknesses

• CWE-120Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')Base
• CWE-787Out-of-bounds WriteBase

Data version

5.1

Document digest

1ba4291689f834fdc0a99962eaa3ba083d5c99adb7d84ef3136f55579974c301

• cert-portal.siemens.comhttps://cert-portal.siemens.com/productcert/pdf/ssa-373591.pdfx_refsource_MISC
• cert-portal.siemens.comhttps://cert-portal.siemens.com/productcert/html/ssa-373591.html