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CVE-2018-11646

80
FAUCET Score

CVE-2018-11646 is a denial-of-service vulnerability in WebKitGTK+ versions through 2.21.3, where mishandling of an unset pageURL in favicon database functions can lead to an application crash. With a CVSS score of 7.5 (High), this vulnerability can be exploited remotely with low attack complexity, resulting in high availability impact. While not actively exploited in the wild, proof-of-concept code and a Metasploit module are publicly available, though there is minimal community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
<= 2.21.3CPE matchmatch criteria
cpe:2.3:a:webkitgtk:webkitgtk\+:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

7.5HIGH

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
3.6
CvssVersion
3.0

Exploit Intelligence

EPSS Score
68.68%
Probability of exploitation in next 30 days
EPSS Percentile
99.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
Metasploit: WebKitGTK+ WebKitFaviconDatabase DoS · Jun 3, 2018
ExploitDB: EDB-44876 · Jun 11, 2018
This CVE's current EPSS score of 0.6868 is in the 99th percentile among its peer group of 51,553 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 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

Remediation records are not available for this CVE.

References

bugs.webkit.org / show_bug.cgi
Issue TrackingPatchVendor Advisory
bugzilla.gnome.org / show_bug.cgi
ExploitIssue TrackingThird Party Advisory
security.gentoo.org / glsa/201808-04
Third Party Advisory
exploit-db.com / exploits/44842
ExploitThird Party AdvisoryVDB Entry
exploit-db.com / exploits/44876
ExploitThird Party AdvisoryVDB Entry