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CVE-2016-9643

20
FAUCET Score

CVE-2016-9643 describes a denial-of-service vulnerability in WebKit 2.4.11, where specially crafted regular expressions can lead to excessive memory consumption. This unauthenticated, low-complexity attack can be executed remotely, resulting in high availability impact. Despite its high CVSS score of 7.5, there is no known active exploitation, public exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
2.4.11CPE matchmatch criteria
cpe:2.3:a:webkit:webkit:2.4.11:*:*:*:*:*:*:*

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
3.07%
Probability of exploitation in next 30 days
EPSS Percentile
86.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.0307 is in the 75th percentile among its peer group of 51,466 CVEs.

Social Chatter

No social media mentions found for this CVE.

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

security.gentoo.org / glsa/201706-15
openwall.com / lists/oss-security/2016/11/26/2
Mailing ListThird Party Advisory
openwall.com / lists/oss-security/2016/11/26/5
Mailing ListThird Party Advisory
securityfocus.com / bid/94559
securitytracker.com / id/1038137