HOMEVULNERABILITIESCVE-2018-11686
CRITICALPOC

CVE-2018-11686

CWE-20Published: July 3, 2019· Updated: Jun 17, 2026

9.8
CVSS v3.1

Official Description

The Publish Service in FlexPaper (later renamed FlowPaper) 2.3.6 allows remote code execution via setup.php and change_config.php.

NVD Source

Technical Analysis

CVE-2018-11686 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.

A proof-of-concept (PoC) exploit exists for CVE-2018-11686. While not yet confirmed in active campaigns, the availability of PoC code increases exploitation risk substantially.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges Req.None
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected Vendors & Products

flowpaper1 product(s)
flexpaper
Source: NVD CPE · 1 total CPE entries

Exploit & PoC Resources

POC AVAILABLEProof-of-concept code exists
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

PATCHhttps://redtimmysec.wordpress.com/2019/03/07/flexpaper-remote-code-execution
PATCHhttps://redtimmysec.wordpress.com/2019/03/07/flexpaper-remote-code-execution
ADVISORYhttps://flowpaper.com/blog/
ADVISORYhttps://flowpaper.com/blog/

All References (4)

→
https://flowpaper.com/blog/Release Notes · Third Party Advisory
→
https://redtimmysec.wordpress.com/2019/03/07/flexpaper-remote-code-executionExploit · Patch · Third Party Advisory
→
https://flowpaper.com/blog/Release Notes · Third Party Advisory
→
https://redtimmysec.wordpress.com/2019/03/07/flexpaper-remote-code-executionExploit · Patch · Third Party Advisory

Quick Facts

CVE IDCVE-2018-11686
CVSS Score9.8 / 10
SeverityCRITICAL
WeaknessCWE-20
CISA KEVNo
ExploitPOC
Affected1 vendor(s)
PublishedJul 3, 2019

Related CVEs (CWE-20)

CVE-2008-6555
10.0
CVE-2011-0923
10.0
CVE-2003-1425
10.0
CVE-2011-0647
10.0
CVE-2007-6494
10.0
CVE-2007-4915
10.0

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2018-11686 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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