CVE-2020-15988 [Medium] | Security Vulnerability in Chrome

CVE-2020-15988 is rated Moderate Risk (53.1/100): CVSS Medium severity, with medium exploitation likelihood (EPSS 1.29%). Review affected assets and schedule remediation.

#	Date	Old EPSS score	New EPSS score	Delta (New - Old)
1	2025-11-21	1.08%	1.29%	+0.21%
2	2025-11-18	1.29%	1.08%	-0.21%
3	2025-03-30	—	1.29%	—

Date

Old EPSS score

New EPSS score

Delta (New - Old)

2025-11-21

1.08%

1.29%

+0.21%

2025-11-18

1.29%

1.08%

-0.21%

2025-03-30

—

1.29%

—

Base score	Version	Severity	Vector	Exploitability	Impact	Score source
6.3	3.1	MEDIUM	`CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L` Click to expand Attack vector (AV:N) Could be attacked over the internet or any normal routed network—not just someone sitting at the machine. Attack complexity (AC:L) Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup. Privileges required (PR:N) No account or special rights needed—anonymous or random user is enough. User interaction (UI:R) A real person has to do something—click, install, enable—otherwise it doesn’t land. Scope (S:U) Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems. Confidentiality (C:L) Some sensitive info could get out, but not a total data dump. Integrity (I:L) Attackers could change some data, but it’s limited—not everything goes. Availability (A:L) Might cause slowdowns, glitches, or partial disruption—not a full brick.	2.8	3.4	[email protected]
6.8	2.0	MEDIUM	`AV:N/AC:M/Au:N/C:P/I:P/A:P` Click to expand Access vector (AV:N) Can be exploited remotely over network reachability. Access complexity (AC:M) Exploitation needs some favorable conditions, but not exceptional ones. Authentication (AU:N) No authentication is required. Confidentiality impact (C:P) Partial confidentiality impact. Integrity impact (I:P) Partial integrity impact. Availability impact (A:P) Partial availability impact.	8.6	6.4	[email protected]

Base score

Version

Severity

Vector

Exploitability

Impact

Score source

6.3

3.1

MEDIUM

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L Click to expand

Attack vector (AV:N): Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L): Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N): No account or special rights needed—anonymous or random user is enough.
User interaction (UI:R): A real person has to do something—click, install, enable—otherwise it doesn’t land.
Scope (S:U): Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:L): Some sensitive info could get out, but not a total data dump.
Integrity (I:L): Attackers could change some data, but it’s limited—not everything goes.
Availability (A:L): Might cause slowdowns, glitches, or partial disruption—not a full brick.

2.8

3.4

[email protected]

6.8

2.0

MEDIUM

AV:N/AC:M/Au:N/C:P/I:P/A:P Click to expand

Access vector (AV:N): Can be exploited remotely over network reachability.
Access complexity (AC:M): Exploitation needs some favorable conditions, but not exceptional ones.
Authentication (AU:N): No authentication is required.
Confidentiality impact (C:P): Partial confidentiality impact.
Integrity impact (I:P): Partial integrity impact.
Availability impact (A:P): Partial availability impact.

8.6

6.4

[email protected]

OS Trackers for CVE-2020-15988

vendor	priority	summary	link
`debian`	not yet assigned	CVE-2020-15988 not yet assigned priority: Debian including 1 source packages (chromium), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5.	https://security-tracker.debian.org/tracker/CVE-2020-15988
`gentoo`	normal	CVE-2020-15988: 1 GLSA(s) (202010-01), 2 atom(s) (www-client/chromium, www-client/google-chrome); latest impact normal.	https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2020-15988
`redhat`	low	—	https://access.redhat.com/security/cve/CVE-2020-15988
`ubuntu`	medium	CVE-2020-15988 medium priority: Ubuntu including 1 source packages (chromium-browser), 5 status rows across 5 suites (bionic, focal, trusty, upstream, xenial): released 3, DNE 2.	https://ubuntu.com/security/CVE-2020-15988

Affected software / configurations for CVE-2020-15988

Vendor	Product	Version	Raw CPE
google	chrome	< 86.0.4240.75	cpe:2.3:a:google:chrome::::::::
fedoraproject	fedora	31	cpe:2.3:o:fedoraproject:fedora:31:::::::*
fedoraproject	fedora	32	cpe:2.3:o:fedoraproject:fedora:32:::::::*
fedoraproject	fedora	33	cpe:2.3:o:fedoraproject:fedora:33:::::::*
debian	debian_linux	10.0	cpe:2.3:o:debian:debian_linux:10.0:::::::*
opensuse	backports_sle	15.0	cpe:2.3:a:opensuse:backports_sle:15.0:sp2::::::

References for CVE-2020-15988

URL	Tags
http://lists.opensuse.org/opensuse-security-announce/2020-11/msg00016.html	Mailing List Third Party Advisory
https://chromereleases.googleblog.com/2020/10/stable-channel-update-for-desktop.html	Release Notes Vendor Advisory
https://crbug.com/1092518	Permissions Required Vendor Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/24QFL4C3AZKMFVL7LVSYMU2DNE5VVUGS/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/4GWCWNHTTYOH6HSFUXPGPBB6J6JYZHZE/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/SC3U3H6AISVZB5PLZLLNF4HMQ4UFFL7M/
https://www.debian.org/security/2021/dsa-4824	Third Party Advisory

URL

CVE-2020-15988

Exploit prediction scoring system (EPSS) score for CVE-2020-15988

Common vulnerability scoring system (CVSS) metrics for CVE-2020-15988

Weakness enumeration for CVE-2020-15988

OS Trackers for CVE-2020-15988

Affected software / configurations for CVE-2020-15988

References for CVE-2020-15988