CVE-2021-33822

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

1.93% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 78.3% 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: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

2021-06-18 18:47Z5 YR AGO

Last updated

2024-08-03 23:58Z2 YR AGO

Reserved

2021-06-03

Assigning CNA

mitre

Record state

PUBLISHED

Severity

Not rated by the issuing CNA

CNA CVSS vector

Not published by the issuing CNA

Weaknesses

• CWE-400Uncontrolled Resource ConsumptionClass

Data version

5.1

Document digest

85a6523ce6b04c66892613f3b456c3bf201a1b55ffe474633546e30c156cfe4a

• github.comhttps://github.com/shekyan/slowhttptestx_refsource_MISC
• www.sing4g.comhttps://www.sing4g.com/product-page/4gee-router-hh70vb-4g-300mbps-2lan-32wifix_refsource_MISC
• github.comhttps://github.com/Jian-Xian/CVE-POC/blob/master/CVE-2021-33822.mdx_refsource_MISC