CVE-2021-20197

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

0.30% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 22.9% of scored records. A rank, not a probability.

NVD base score

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

NVD CVSS vector

CVSS:3.1/AV:L/AC:H/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

Moderate. 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

2021-03-26 16:47Z5 YR AGO

Last updated

2025-12-03 15:08Z10 MO AGO

Reserved

2020-12-17

Assigning CNA

redhat

Record state

PUBLISHED

Severity

Medium (CVSS 6.3)

CNA CVSS vector

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

Weaknesses

• CWE-59Improper Link Resolution Before File Access ('Link Following')Base
• CWE-362Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')Class

Data version

5.2

Document digest

0c74290533e4ff69cf94f8f00aa71be6395b68cc6bd38cc10e3e74ee3681469a

• bugzilla.redhat.comhttps://bugzilla.redhat.com/show_bug.cgi?id=1913743x_refsource_MISC
• sourceware.orghttps://sourceware.org/bugzilla/show_bug.cgi?id=26945x_refsource_MISC
• security.netapp.comhttps://security.netapp.com/advisory/ntap-20210528-0009/x_refsource_CONFIRM
• security.gentoo.orgGLSA-202208-30https://security.gentoo.org/glsa/202208-30vendor-advisoryx_refsource_GENTOO