CVE-2021-25741

Exploitation

Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.

SSVC decision

• ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
• AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
• Technical ImpacttotalSuccessful exploitation gives total control of the vulnerable component.

CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.

EPSS probability

7.96% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 94.7% 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:L/PR:L/UI:N/S:U/C:H/I:H/A:N

NVD analysis status

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

Red Hat severity

Important. Red Hat's rating for its own products, not a CVSS rating.

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

2021-09-20 17:05Z5 YR AGO

Last updated

2024-09-16 23:26Z2 YR AGO

Reserved

2021-01-21

Assigning CNA

kubernetes

Record state

PUBLISHED

Severity

High (CVSS 8.8)

CNA CVSS vector

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

Weaknesses

• CWE-20Improper Input ValidationClass
• CWE-552Files or Directories Accessible to External PartiesBase
• CWE-59Improper Link Resolution Before File Access ('Link Following')Base

Data version

5.1

Document digest

b60ced7c32e853b0e9037fbb922f4fed0f3c68ec16abb53784ac7399af3c49b9

• groups.google.comhttps://groups.google.com/g/kubernetes-security-announce/c/nyfdhK24H7sx_refsource_MISC
• github.comhttps://github.com/kubernetes/kubernetes/issues/104980x_refsource_MISC
• security.netapp.comhttps://security.netapp.com/advisory/ntap-20211008-0006/x_refsource_CONFIRM