CVE-2021-39856

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

2.36% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 83.3% of scored records. A rank, not a probability.

NVD base score

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

NVD CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/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

2021-09-29 15:39Z5 YR AGO

Last updated

2024-09-16 19:56Z2 YR AGO

Reserved

2021-08-23

Assigning CNA

adobe

Record state

PUBLISHED

Severity

Medium (CVSS 6.5)

CNA CVSS vector

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

Weaknesses

• CWE-200Exposure of Sensitive Information to an Unauthorized ActorClass

Data version

5.1

Document digest

d70fe5dc773b753646f3d5726f138309385f1b82cf33c9c5af417781f85ced02

• helpx.adobe.comhttps://helpx.adobe.com/security/products/acrobat/apsb21-55.htmlx_refsource_MISC