CVE-2020-9983

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

2.11% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 80.4% 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

2020-10-16 16:56Z5 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-787Out-of-bounds WriteBase

Data version

5.1

Document digest

6c885135301019c3ad0e20512a07b5df1e18a2e48e9b77b33ff25c570301188e

• support.apple.comhttps://support.apple.com/kb/HT211843x_refsource_CONFIRM
• support.apple.comhttps://support.apple.com/kb/HT211850x_refsource_CONFIRM
• support.apple.comhttps://support.apple.com/kb/HT211844x_refsource_CONFIRM
• support.apple.comhttps://support.apple.com/HT211845x_refsource_MISC
• support.apple.comhttps://support.apple.com/kb/HT211952x_refsource_CONFIRM
• seclists.org20201115 APPLE-SA-2020-11-13-5 Additional information for APPLE-SA-2020-09-16-3 Safari 14.0http://seclists.org/fulldisclosure/2020/Nov/18mailing-listx_refsource_FULLDISC
• seclists.org20201115 APPLE-SA-2020-11-13-4 Additional information for APPLE-SA-2020-09-16-2 tvOS 14.0http://seclists.org/fulldisclosure/2020/Nov/19mailing-listx_refsource_FULLDISC
• seclists.org20201115 APPLE-SA-2020-11-13-3 Additional information for APPLE-SA-2020-09-16-1 iOS 14.0 and iPadOS 14.0http://seclists.org/fulldisclosure/2020/Nov/20mailing-listx_refsource_FULLDISC
• seclists.org20201115 APPLE-SA-2020-11-13-6 Additional information for APPLE-SA-2020-09-16-4 watchOS 7.0http://seclists.org/fulldisclosure/2020/Nov/22mailing-listx_refsource_FULLDISC
• www.openwall.com[oss-security] 20201123 WebKitGTK and WPE WebKit Security Advisory WSA-2020-0008http://www.openwall.com/lists/oss-security/2020/11/23/3mailing-listx_refsource_MLIST
• www.debian.orgDSA-4797https://www.debian.org/security/2020/dsa-4797vendor-advisoryx_refsource_DEBIAN
• lists.fedoraproject.orgFEDORA-2020-145877bcd3https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PDGBNKYT7NMW7CJ26YFUPUHPJVYGV7IQ/vendor-advisoryx_refsource_FEDORA
• support.apple.comhttps://support.apple.com/kb/HT211935x_refsource_CONFIRM
• lists.fedoraproject.orgFEDORA-2020-e8a7566e80https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BY2OBQZFMEFZOSWXPXHPEHOJXXILEEX2/vendor-advisoryx_refsource_FEDORA
• security.gentoo.orgGLSA-202012-10https://security.gentoo.org/glsa/202012-10vendor-advisoryx_refsource_GENTOO