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CVE-2020-10018

31
FAUCET Score

CVE-2020-10018 is a critical memory corruption vulnerability (use-after-free) affecting WebKitGTK and WPE WebKit versions prior to 2.28.0, including distributions like Canonical, Debian, Fedora, and openSUSE. With a CVSS score of 9.8, this flaw allows for unauthenticated, low-complexity remote attacks that could lead to complete compromise of confidentiality, integrity, and availability. While there is no evidence of active exploitation, public exploit code, or inclusion in the KEV catalog, the vulnerability has garnered significant community discussion with 10 mentions, indicating awareness and potential for future exploitation.

Impacted Technologies

VendorProductVersion(s)CPE
< 2.28.0CPE matchmatch criteria
cpe:2.3:a:webkitgtk:webkitgtk:*:*:*:*:*:*:*:*
< 2.28.0CPE matchmatch criteria
cpe:2.3:a:wpewebkit:wpe_webkit:*:*:*:*:*:*:*:*
30CPE matchmatch criteria
cpe:2.3:o:fedoraproject:fedora:30:*:*:*:*:*:*:*
31CPE matchmatch criteria
cpe:2.3:o:fedoraproject:fedora:31:*:*:*:*:*:*:*
10.0CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

9.8CRITICAL

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
4.99%
Probability of exploitation in next 30 days
EPSS Percentile
91.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.0499 is in the 85th percentile among its peer group of 36,835 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

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

Remediation

Patch Available

Vendor Patches (3)

redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: webkitgtk4-0:2.28.2-2.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 8Fixed in: webkit2gtk3-0:2.28.4-1.el8
View patch
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: webkitgtk3

Vendor Advisories (1)

redhatCVE-2020-10018Moderate

webkitgtk: Use-after-free issue in accessibility/AXObjectCache.cpp

Mar 2, 2020

References

lists.opensuse.org / opensuse-security-announce/2020-05/msg00008.html
Mailing ListThird Party Advisory
bugs.webkit.org / show_bug.cgi
Permissions RequiredVendor Advisory
lists.fedoraproject.org / archives/list/package-announce%40lists.fedoraproject.org/message/DOR5LPL4UASVAR76EIHCL4O2KGDWGC6K
lists.fedoraproject.org / archives/list/package-announce%40lists.fedoraproject.org/message/GLERWAS2LL7SX2GHA2DDZ2PL3QC5OHIF
security.gentoo.org / glsa/202006-08
Third Party Advisory
usn.ubuntu.com / 4310-1
Third Party Advisory
webkitgtk.org / security/WSA-2020-0003.html
Vendor Advisory
wpewebkit.org / security/WSA-2020-0003.html
Vendor Advisory
debian.org / security/2020/dsa-4641
Third Party Advisory