CVE-2021-30496

Exploitation

Public exploit code exists. CISA's assessment records a public proof of concept. That is not a report of exploitation in the wild.

SSVC decision

• ExploitationpocPublic proof-of-concept exploit code exists. Not a report of exploitation in the wild.
• AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
• Technical ImpactpartialSuccessful exploitation gives limited 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

1.17% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 67.5% of scored records. A rank, not a probability.

NVD base score

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

NVD CVSS vector

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

2021-04-20 00:00Z5 YR AGO

Last updated

2024-08-03 22:32Z2 YR AGO

Reserved

2021-04-11

Assigning CNA

mitre

Record state

PUBLISHED

Severity

Medium (CVSS 5.7)

CNA CVSS vector

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

Weaknesses

• CWE-121Stack-based Buffer OverflowVariant

Data version

5.1

Document digest

abe9231c50d8562d272bfd41ea6e19bf8e1dcd23f16c8af08a8149a114a078f1

• gist.github.comhttps://gist.github.com/raminfp/bf64c2974ee6949787329749148a4b31
• t.mehttps://t.me/joinchat/bJ9cnUosVh03ZTI0