CVE-2021-29998

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

2.39% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 83.7% of scored records. A rank, not a probability.

NVD base score

9.8 (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: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

2021-04-13 16:16Z5 YR AGO

Last updated

2024-08-03 22:24Z2 YR AGO

Reserved

2021-04-02

Assigning CNA

mitre

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

Data version

5.1

Document digest

2b3eeddcd8be981bf6a5be9b025ce57c3a015b2920be565ccc9a023dd98821de

• support2.windriver.comhttps://support2.windriver.com/index.php?page=security-noticesx_refsource_MISC
• cert-portal.siemens.comhttps://cert-portal.siemens.com/productcert/pdf/ssa-560465.pdfx_refsource_CONFIRM
• us-cert.cisa.govhttps://us-cert.cisa.gov/ics/advisories/icsa-21-194-12x_refsource_MISC
• cert-portal.siemens.comhttps://cert-portal.siemens.com/productcert/pdf/ssa-910883.pdfx_refsource_CONFIRM