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CVE-2019-9939

22
FAUCET Score

CVE-2019-9939 describes an authentication bypass vulnerability in SHAREit for Android versions prior to 4.0.36. An attacker on the same network can exploit this by requesting a non-existent page, causing the application to incorrectly add their device to the list of recognized devices. This vulnerability carries a high CVSS score of 8.8, indicating a severe risk with an adjacent attack vector, low attack complexity, and high potential for confidentiality, integrity, and availability impacts. Despite its severity, there is currently no known active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
<= 4.0.34CPE matchmatch criteria
cpe:2.3:a:ushareit:shareit:*:*:*:*:*:android:*:*

CVSS Data

CVSS version used by this source: 3.0

8.8HIGH

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

Attack Vector
ADJACENT_NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
2.8
Impact Score
5.9
CvssVersion
3.0

Exploit Intelligence

EPSS Score
1.59%
Probability of exploitation in next 30 days
EPSS Percentile
73.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.0159 is in the 85th percentile among its peer group of 1,859 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.1 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 0.2 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

blog.redforce.io / shareit-vulnerabilities-enable-unrestricted-access-to-adjacent-devices-files
ExploitThird Party Advisory