CVE-2021-33259

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

1.79% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 76.4% of scored records. A rank, not a probability.

NVD base score

5.3 (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:L/I:N/A:N

NVD analysis status

Modified. NVD last modified this record on 2026-07-09.

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

2021-10-31 18:32Z4 YR AGO

Last updated

2026-07-09 00:13Z1 MO AGO

Reserved

2021-05-20

Assigning CNA

mitre

Record state

PUBLISHED

Severity

Not rated by the issuing CNA

CNA CVSS vector

Not published by the issuing CNA

Weaknesses

• CWE-306Missing Authentication for Critical FunctionBase

Data version

5.2

Document digest

ec229f50c69948f1e9b1dcbe67591a8bdcc6d420fa0b2417f6119b10f26fceef

• www.dlink.comhttps://www.dlink.com/en/security-bulletin/
• github.comhttps://github.com/jayus0821/uai-poc/blob/main/D-Link/DIR-868L/webaccess_UAI.md