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CVE-2020-6434

27
FAUCET Score

CVE-2020-6434 is a high-severity use-after-free vulnerability in Google Chrome's devtools, affecting versions prior to 81.0.4044.92, as well as Debian, Fedora, and openSUSE distributions. This flaw allows a remote attacker to potentially exploit heap corruption by enticing a user to visit a crafted HTML page. With a CVSS score of 8.8, it presents a significant risk, enabling high impact to confidentiality, integrity, and availability if successfully exploited. While not listed in CISA's KEV catalog and lacking public exploit code in Metasploit, Nuclei, or ExploitDB, the vulnerability has garnered notable community discussion and media coverage, indicating awareness within the cybersecurity landscape.

Impacted Technologies

VendorProductVersion(s)CPE
< 81.0.4044.92CPE matchmatch criteria
cpe:2.3:a:google:chrome:*:*:*:*:*:*:*:*
30CPE matchmatch criteria
cpe:2.3:o:fedoraproject:fedora:30:*:*:*:*:*:*:*
31CPE matchmatch criteria
cpe:2.3:o:fedoraproject:fedora:31:*:*:*:*:*:*:*
32CPE matchmatch criteria
cpe:2.3:o:fedoraproject:fedora:32:*:*:*:*:*:*:*
9.0CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

8.8HIGH

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
2.8
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.66%
Probability of exploitation in next 30 days
EPSS Percentile
74.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0166 is in the 73rd percentile among its peer group of 14,875 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.2 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.1 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (2)

redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6 SupplementaryFixed in: chromium-browser-0:81.0.4044.92-2.el6_10
View patch
googlevendor investigatingvia nvd_reference
View patch

Vendor Advisories (1)

redhatCVE-2020-6434Moderate

chromium-browser: Use after free in devtools

Apr 7, 2020

References

lists.opensuse.org / opensuse-security-announce/2020-04/msg00024.html
Mailing ListThird Party Advisory
lists.opensuse.org / opensuse-security-announce/2020-04/msg00031.html
Mailing ListThird Party Advisory
chromereleases.googleblog.com / 2020/04/stable-channel-update-for-desktop_7.html
Release NotesVendor Advisory
crbug.com / 1048555
ExploitIssue TrackingMailing ListVendor Advisory
lists.fedoraproject.org / archives/list/package-announce%40lists.fedoraproject.org/message/6XWIVVYIQU67QR2LHNGGZBS4FZOW2RQO
lists.fedoraproject.org / archives/list/package-announce%40lists.fedoraproject.org/message/HFVP775RPRDVY5FUCN7ABH5AE74TQFDD
lists.fedoraproject.org / archives/list/package-announce%40lists.fedoraproject.org/message/XMXPDHEEACPD3BCMTC26SCCYB2ZMUOAO
debian.org / security/2020/dsa-4714
Third Party Advisory