CVE-2020-15963
Insufficient policy enforcement in extensions in Google Chrome prior to 85.0.4183.121 allowed an attacker who convinced a user to install a malicious extension to potentially perform a sandbox escape
02 Description
Insufficient policy enforcement in extensions in Google Chrome prior to 85.0.4183.121 allowed an attacker who convinced a user to install a malicious extension to potentially perform a sandbox escape
03 Exploitation and scoring
- 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
- 1.47% probability of exploitation activity in the next 30 days.
- EPSS percentile
- Equal to or higher than the score of 73.5% of scored records. A rank, not a probability.
- NVD base score
- 9.6 (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:C/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.
04 Metadata
- Published
- 2020-09-21 19:06Z6 YR AGO
- Last updated
- 2024-08-04 13:30Z2 YR AGO
- Reserved
- 2020-07-27
- Assigning CNA
- Chrome
- Record state
- PUBLISHED
- Severity
- Not rated by the issuing CNA
- CNA CVSS vector
- Not published by the issuing CNA
- Weaknesses
- No CWE assigned
- Data version
- 5.1
- Document digest
- 58212144c5c2ab9d9058a5d8c4c6fd7932be1bee18e338a485300a59fa9e74e0
05 Affected products
06 References
- chromereleases.googleblog.comhttps://chromereleases.googleblog.com/2020/09/stable-channel-update-for-desktop_21.html
- crbug.comhttps://crbug.com/1113558
- lists.opensuse.orgopenSUSE-SU-2020:1527http://lists.opensuse.org/opensuse-security-announce/2020-09/msg00087.html
- lists.opensuse.orgopenSUSE-SU-2020:1542http://lists.opensuse.org/opensuse-security-announce/2020-09/msg00095.html
- lists.opensuse.orgopenSUSE-SU-2020:1550http://lists.opensuse.org/opensuse-security-announce/2020-09/msg00096.html
- security.gentoo.orgGLSA-202009-13https://security.gentoo.org/glsa/202009-13
- lists.fedoraproject.orgFEDORA-2020-2d994b986dhttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GNIYFJST4TFJYFZ27VODBOINCLBGULTD/
- lists.fedoraproject.orgFEDORA-2020-aea86f913ehttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FN7HZIGAOCZKBT4LV363BCPRA5FLY25I/
- lists.fedoraproject.orgFEDORA-2020-214865ce21https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/YWNBJFBPKYCYSZTS54FHNCRZG6KC2AIJ/
- lists.opensuse.orgopenSUSE-SU-2020:1713http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00049.html
- www.debian.orgDSA-4824https://www.debian.org/security/2021/dsa-4824
- security.gentoo.orgGLSA-202101-30https://security.gentoo.org/glsa/202101-30
07 Fixed in
Arch Linux
- chromium Fixed in 85.0.4183.121-1
Source: Arch Linux Security Tracker, the Arch Linux security team. Reformatted by exploit.cc.
Debian 12
- chromium Fixed in 87.0.4280.88-0.1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 13
- chromium Fixed in 87.0.4280.88-0.1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 14
- chromium Fixed in 87.0.4280.88-0.1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 16.04 LTS
- chromium-browser Fixed in 85.0.4183.121-0ubuntu0.16.04.1
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 18.04 LTS
- chromium-browser Fixed in 85.0.4183.121-0ubuntu0.18.04.1
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
A release or ecosystem missing from this list has no record here. It may be unaffected or not covered by the source. Source notices and licences.