CVE-2020-27918

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

1.42% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 71.0% 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

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 21:11Z5 YR AGO

Last updated

2024-08-04 16:25Z2 YR AGO

Reserved

2020-10-27

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

38e12de71d0186ea2db61d079517d0e5d3239d3900c0de1bf5b6c5db8ddc5521

• support.apple.comhttps://support.apple.com/en-us/HT211931x_refsource_MISC
• support.apple.comhttps://support.apple.com/en-us/HT211935x_refsource_MISC
• support.apple.comhttps://support.apple.com/en-us/HT211934x_refsource_MISC
• support.apple.comhttps://support.apple.com/en-us/HT211928x_refsource_MISC
• support.apple.comhttps://support.apple.com/en-us/HT211929x_refsource_MISC
• support.apple.comhttps://support.apple.com/en-us/HT211930x_refsource_MISC
• support.apple.comhttps://support.apple.com/en-us/HT211933x_refsource_MISC
• seclists.org20201215 APPLE-SA-2020-12-14-4 Additional information for APPLE-SA-2020-11-13-1 macOS Big Sur 11.0.1http://seclists.org/fulldisclosure/2020/Dec/32mailing-listx_refsource_FULLDISC
• 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
• lists.fedoraproject.orgFEDORA-2021-8070916f7ahttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/EQ3U3VBSOJB46WCO66TEWE5OAXLTU3YW/vendor-advisoryx_refsource_FEDORA
• www.debian.orgDSA-4877https://www.debian.org/security/2021/dsa-4877vendor-advisoryx_refsource_DEBIAN
• lists.fedoraproject.orgFEDORA-2021-864dc37032https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/L3L6ZZOU5JS7E3RFYGLP7UFLXCG7TNLU/vendor-advisoryx_refsource_FEDORA
• lists.fedoraproject.orgFEDORA-2021-619711d709https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JN6ZOD62CTO54CHTMJTHVEF6R2Y532TJ/vendor-advisoryx_refsource_FEDORA
• security.gentoo.orgGLSA-202104-03https://security.gentoo.org/glsa/202104-03vendor-advisoryx_refsource_GENTOO