CVE-2021-27343

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

1.67% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 74.8% 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: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

2021-04-06 12:07Z5 YR AGO

Last updated

2024-08-03 20:48Z2 YR AGO

Reserved

2021-02-16

Assigning CNA

mitre

Record state

PUBLISHED

Severity

Not rated by the issuing CNA

CNA CVSS vector

Not published by the issuing CNA

Weaknesses

• CWE-120Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')Base

Data version

5.1

Document digest

7adc7f0661a7db1a92f07e7e75e3bf8384d8997ceef06de85796e50be77da360

• github.comhttps://github.com/SerenityOS/serenity/issues/5317x_refsource_MISC
• github.comhttps://github.com/SerenityOS/serenity/pull/5344x_refsource_MISC
• github.comhttps://github.com/SerenityOS/serenity/commit/48fbf6a88d4822a1e5470cf08f29464511bd72c1x_refsource_MISC