CVE-2021-43339

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

9.56% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 95.0% of scored records. A rank, not a probability.

NVD base score

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

NVD CVSS vector

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

2021-11-03 19:38Z4 YR AGO

Last updated

2024-08-04 03:55Z2 YR AGO

Reserved

2021-11-03

Assigning CNA

mitre

Record state

PUBLISHED

Severity

Not rated by the issuing CNA

CNA CVSS vector

Not published by the issuing CNA

Weaknesses

• CWE-77Improper Neutralization of Special Elements used in a Command ('Command Injection')Class

Data version

5.1

Document digest

9a682bae81f74ebe706dfe414d9d389f04a486ef814d7919c91dd4229239450d

• www.exploit-db.comhttps://www.exploit-db.com/exploits/50469x_refsource_MISC
• pentest.com.trhttps://pentest.com.tr/blog/RCE-via-Meow-Variant-along-with-an-Example-0day-PacketHackingVillage-Defcon29.htmlx_refsource_MISC
• www.exploit-db.comhttps://www.exploit-db.com/exploits/50468x_refsource_MISC