HOMEVULNERABILITIESCVE-2019-18952
CRITICAL

CVE-2019-18952

CWE-434Published: November 13, 2019· Updated: Jun 17, 2026

9.8
CVSS v3.1

Official Description

SibSoft Xfilesharing through 2.5.1 allows cgi-bin/up.cgi arbitrary file upload. This can be combined with CVE-2019-18951 to achieve remote code execution via a .html file, containing short codes, that is served over HTTP.

NVD Source

Technical Analysis

CVE-2019-18952 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 9.8.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges Req.None
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected Vendors & Products

sibsoft1 product(s)
xfilesharing
Source: NVD CPE · 1 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

ADVISORYhttp://packetstormsecurity.com/files/155324/Xfilesharing-2.5.1-Local-File-Inclusion-Shell-Upload.html
ADVISORYhttps://gist.github.com/pak0s/af9f640170aed335fdf6d110d468dbce
ADVISORYhttp://packetstormsecurity.com/files/155324/Xfilesharing-2.5.1-Local-File-Inclusion-Shell-Upload.html
ADVISORYhttps://gist.github.com/pak0s/af9f640170aed335fdf6d110d468dbce

All References (4)

→
http://packetstormsecurity.com/files/155324/Xfilesharing-2.5.1-Local-File-Inclusion-Shell-Upload.htmlExploit · Issue Tracking · Third Party Advisory
→
https://gist.github.com/pak0s/af9f640170aed335fdf6d110d468dbceExploit · Third Party Advisory
→
http://packetstormsecurity.com/files/155324/Xfilesharing-2.5.1-Local-File-Inclusion-Shell-Upload.htmlExploit · Issue Tracking · Third Party Advisory
→
https://gist.github.com/pak0s/af9f640170aed335fdf6d110d468dbceExploit · Third Party Advisory

Quick Facts

CVE IDCVE-2019-18952
CVSS Score9.8 / 10
SeverityCRITICAL
WeaknessCWE-434
CISA KEVNo
Affected1 vendor(s)
PublishedNov 13, 2019

Related CVEs (CWE-434)

CVE-2023-23656
10.0
CVE-2025-30933
10.0
CVE-2023-49815
10.0
CVE-2024-34555
10.0
CVE-2024-31115
10.0
CVE-2026-57700
KEV10.0

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2019-18952 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWatch. CVE data is provided under the NVD usage policy.
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