CVE-2020-6551

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

29.29% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 98.0% 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

Important. 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

2020-09-21 19:06Z5 YR AGO

Last updated

2024-08-04 09:11Z2 YR AGO

Reserved

2020-01-08

Assigning CNA

Chrome

Record state

PUBLISHED

Severity

Not rated by the issuing CNA

CNA CVSS vector

Not published by the issuing CNA

Weaknesses

• CWE-416Use After FreeVariant
• CWE-787Out-of-bounds WriteBase

Data version

5.1

Document digest

a426c26002564199cbd54be8bbe31276ad286a9209d941a4cc4c7ad2d1db56e7

• chromereleases.googleblog.comhttps://chromereleases.googleblog.com/2020/08/stable-channel-update-for-desktop.htmlx_refsource_MISC
• crbug.comhttps://crbug.com/1107815x_refsource_MISC
• lists.fedoraproject.orgFEDORA-2020-6da740d38chttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/EE7XWIZBME7JAY7N6CGPET4CLNHHEIVT/vendor-advisoryx_refsource_FEDORA
• packetstormsecurity.comhttp://packetstormsecurity.com/files/159611/Chrome-XRSystem-FocusedFrameChanged-and-FocusController-NotifyFocusChangedObservers-Use-After-Free.htmlx_refsource_MISC
• www.debian.orgDSA-4824https://www.debian.org/security/2021/dsa-4824vendor-advisoryx_refsource_DEBIAN
• security.gentoo.orgGLSA-202101-30https://security.gentoo.org/glsa/202101-30vendor-advisoryx_refsource_GENTOO