CVE-2021-20505

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

0.55% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 43.6% of scored records. A rank, not a probability.

NVD base score

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

NVD CVSS vector

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

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

2021-07-29 12:00Z5 YR AGO

Last updated

2024-09-16 17:49Z1 YR AGO

Reserved

2020-12-17

Assigning CNA

ibm

Record state

PUBLISHED

Severity

Medium (CVSS 4.4)

CNA CVSS vector

CVSS:3.0/UI:N/S:U/I:N/C:H/AC:H/PR:H/AV:N/A:N/RC:C/RL:O/E:U

Weaknesses

No CWE assigned

Data version

5.1

Document digest

cf3c9f5b594e04f29a98706bb5a6dbfebc475c48e17588b767177800fb3f6d82

• www.ibm.comhttps://www.ibm.com/support/pages/node/6475619x_refsource_CONFIRM
• exchange.xforce.ibmcloud.comibm-powervm-cve202120505-info-disc (198232)https://exchange.xforce.ibmcloud.com/vulnerabilities/198232vdb-entryx_refsource_XF