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CVE-2019-16647

25
FAUCET Score

CVE-2019-16647 describes an Unquoted Search Path vulnerability affecting Maxthon Browser for Windows versions 5.1.0 through 5.2.7. This high-severity vulnerability (CVSS 7.2) allows an attacker to execute arbitrary code with elevated privileges due to the browser's improper handling of search paths. While the attack complexity is low and no user interaction is required, it necessitates high privileges (PR:H) for exploitation, leading to potential high impact on confidentiality, integrity, and availability. There is no evidence of active exploitation, nor are there public Metasploit or ExploitDB modules, though it has garnered some community discussion and media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
>= 5.1.0, <= 5.2.7CPE matchmatch criteria
cpe:2.3:a:maxthon:maxthon_browser:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.2HIGH

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
HIGH
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
1.2
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.96%
Probability of exploitation in next 30 days
EPSS Percentile
78.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0196 is in the 73rd percentile among its peer group of 5,531 CVEs.

Social Chatter

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

Media Mentions

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

forum.maxthon.com / index.php
Third Party Advisory
safebreach.com / Post/Maxthon-Browser-for-Windows-Unquoted-Search-Path-and-Potential-Abuses-CVE-2019-16647
ExploitThird Party Advisory