CVE-2021-39818

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

1.71% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 76.9% of scored records. A rank, not a probability.

NVD base score

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

NVD CVSS vector

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

2021-09-27 15:42Z5 YR AGO

Last updated

2024-09-16 18:54Z2 YR AGO

Reserved

2021-08-23

Assigning CNA

adobe

Record state

PUBLISHED

Severity

High (CVSS 7.8)

CNA CVSS vector

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

Weaknesses

• CWE-788Access of Memory Location After End of BufferBase
• CWE-119Improper Restriction of Operations within the Bounds of a Memory BufferClass

Data version

5.1

Document digest

8555943edfba4fe8255c7592ac3c30a7b841c644469afe54dd23978868ff2f3f

• helpx.adobe.comhttps://helpx.adobe.com/security/products/incopy/apsb21-71.htmlx_refsource_MISC