CVE-2020-9947

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

1.73% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 76.0% of scored records. A rank, not a probability.

NVD base score

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

NVD CVSS vector

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

Moderate. Red Hat's rating for its own products, not a CVSS rating.

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

2020-12-08 19:21Z5 YR AGO

Last updated

2024-08-04 10:50Z2 YR AGO

Reserved

2020-03-02

Assigning CNA

apple

Record state

PUBLISHED

Severity

Not rated by the issuing CNA

CNA CVSS vector

Not published by the issuing CNA

Weaknesses

• CWE-416Use After FreeVariant

Data version

5.1

Document digest

cbe8bc243af78147fa3584aa2c99c71d59c1524496c8773d5482430d26b8a619

• support.apple.comhttps://support.apple.com/en-us/HT211843x_refsource_MISC
• support.apple.comhttps://support.apple.com/en-us/HT211850x_refsource_MISC
• support.apple.comhttps://support.apple.com/en-us/HT211844x_refsource_MISC
• support.apple.comhttps://support.apple.com/en-us/HT211935x_refsource_MISC
• support.apple.comhttps://support.apple.com/en-us/HT211952x_refsource_MISC
• support.apple.comhttps://support.apple.com/en-us/HT211845x_refsource_MISC
• www.openwall.com[oss-security] 20210322 WebKitGTK and WPE WebKit Security Advisory WSA-2021-0002http://www.openwall.com/lists/oss-security/2021/03/22/1mailing-listx_refsource_MLIST
• security.gentoo.orgGLSA-202104-03https://security.gentoo.org/glsa/202104-03vendor-advisoryx_refsource_GENTOO