CVE-2021-3859

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

1.63% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 74.5% 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:N/I:N/A:H

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

2022-08-26 00:00Z4 YR AGO

Last updated

2024-08-03 17:09Z2 YR AGO

Reserved

2021-10-05

Assigning CNA

redhat

Record state

PUBLISHED

Severity

Not rated by the issuing CNA

CNA CVSS vector

Not published by the issuing CNA

Weaknesses

• CWE-214Invocation of Process Using Visible Sensitive InformationBase
• CWE-668Exposure of Resource to Wrong SphereClass

Data version

5.1

Document digest

fdee32340383444007ff6b2031bbc99dfe07f3c18cac5b41ebf509318cf23d86

• bugzilla.redhat.comhttps://bugzilla.redhat.com/show_bug.cgi?id=2010378
• issues.redhat.comhttps://issues.redhat.com/browse/UNDERTOW-1979
• github.comhttps://github.com/undertow-io/undertow/pull/1296
• github.comhttps://github.com/undertow-io/undertow/commit/e43f0ada3f4da6e8579e0020cec3cb1a81e487c2
• access.redhat.comhttps://access.redhat.com/security/cve/CVE-2021-3859
• security.netapp.comhttps://security.netapp.com/advisory/ntap-20221201-0004/