CVE-2021-35963

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

2.41% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 83.6% of scored records. A rank, not a probability.

NVD base score

9.8 (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: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

2021-07-19 11:55Z5 YR AGO

Last updated

2024-09-17 01:41Z2 YR AGO

Reserved

2021-06-30

Assigning CNA

twcert

Record state

PUBLISHED

Severity

Critical (CVSS 9.8)

CNA CVSS vector

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

Weaknesses

• CWE-434Unrestricted Upload of File with Dangerous TypeBase

Data version

5.1

Document digest

83688fca696b1393854b6dcb54ff6f29f4da65aeca034d0f20185f060fe90ee1

• www.twcert.org.twhttps://www.twcert.org.tw/tw/cp-132-4923-d68e6-1.htmlx_refsource_MISC
• www.chtsecurity.comhttps://www.chtsecurity.com/news/ba7b3ae7-14f3-4970-b3f6-4d97d8c7ea25x_refsource_MISC