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CVE-2021-45482

23
FAUCET Score

CVE-2021-45482 is a use-after-free vulnerability in WebKitGTK before version 2.32.4, specifically within the WebCore::ContainerNode::firstChild function. This vulnerability has a CVSS score of 6.5 (Medium), indicating it can be exploited over a network with low complexity, requiring user interaction, and potentially leading to high availability impact. There is currently no evidence of active exploitation, publicly available exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
< 2.32.4CPE matchmatch criteria
cpe:2.3:a:webkitgtk:webkitgtk:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

6.5MEDIUM

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
2.8
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.43%
Probability of exploitation in next 30 days
EPSS Percentile
70.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0143 is in the 82nd percentile among its peer group of 26,234 CVEs.

Social Chatter

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

Media Mentions

No media coverage found for this CVE.

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

Remediation

Patch Available

Vendor Patches (2)

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: webkit2gtk3-0:2.34.6-1.el8
View patch

Vendor Advisories (1)

redhatCVE-2021-45482Moderate

webkitgtk: use-after-free in WebCore::ContainerNode::firstChild

Dec 17, 2021

References

github.com / ChijinZ/security_advisories/tree/master/webkitgtk-2.32.3
ExploitThird Party Advisory
openwall.com / lists/oss-security/2022/01/21/2
Mailing ListThird Party Advisory