CVE-2021-34291

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

1.66% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 74.6% of scored records. A rank, not a probability.

NVD base score

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

NVD CVSS vector

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/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 11:03Z5 YR AGO

Last updated

2024-08-04 00:05Z2 YR AGO

Reserved

2021-06-08

Assigning CNA

siemens

Record state

PUBLISHED

Severity

Not rated by the issuing CNA

CNA CVSS vector

Not published by the issuing CNA

Weaknesses

• CWE-787Out-of-bounds WriteBase
• CWE-20Improper Input ValidationClass

Data version

5.1

Document digest

8d5794e3fc5e8ec275f905e71291046923747ba2cdfa5eb4c4ef783f9e2e27c5

• cert-portal.siemens.comhttps://cert-portal.siemens.com/productcert/pdf/ssa-483182.pdfx_refsource_MISC
• www.zerodayinitiative.comhttps://www.zerodayinitiative.com/advisories/ZDI-21-870/x_refsource_MISC