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CVE-2020-9948

28
FAUCET Score

CVE-2020-9948 is a high-severity type confusion vulnerability in Safari 14.0 and earlier, as well as WebKitGTK+, that could lead to arbitrary code execution when processing maliciously crafted web content. With a CVSS score of 8.8, it presents a significant risk due to its network-based attack vector and low attack complexity, allowing unauthenticated attackers to achieve high impact on confidentiality, integrity, and availability if a user visits a malicious website. While the vulnerability is fixed in Safari 14.0, there is currently no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
< 14.0CPE matchmatch criteria
cpe:2.3:a:apple:safari:*:*:*:*:*:*:*:*
<= 2.30.3CPE matchmatch criteria
cpe:2.3:a:webkit:webkitgtk\+:*:*:*:*:*:*:*:*
10.0CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*

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
1.69%
Probability of exploitation in next 30 days
EPSS Percentile
74.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-24
Model: v2026.06.15
This CVE's current EPSS score of 0.0169 is in the 74th percentile among its peer group of 14,825 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

No media coverage found for this CVE.

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

Remediation

Patch Available

Vendor Patches (3)

redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7 Extended Lifecycle SupportFixed in: webkitgtk4-0:2.48.3-2.el7_9
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 8Fixed in: webkit2gtk3-0:2.30.4-1.el8
View patch
applevendor investigatingvia nvd_reference
View patch

Vendor Advisories (1)

redhatCVE-2020-9948Moderate

webkitgtk: type confusion may lead to arbitrary code execution

Nov 23, 2020

References

seclists.org / fulldisclosure/2020/Nov/18
Mailing ListThird Party Advisory
security.gentoo.org / glsa/202012-10
Third Party Advisory
support.apple.com / HT211845
Release NotesVendor Advisory
debian.org / security/2020/dsa-4797
Third Party Advisory
openwall.com / lists/oss-security/2020/11/23/3
Mailing ListThird Party Advisory