HOMEVULNERABILITIESCVE-2018-16156
HIGHPOC

CVE-2018-16156

CWE-426Published: May 17, 2019· Updated: Jun 17, 2026

7.8
CVSS v3.1

Official Description

In PaperStream IP (TWAIN) 1.42.0.5685 (Service Update 7), the FJTWSVIC service running with SYSTEM privilege processes unauthenticated messages received over the FjtwMkic_Fjicube_32 named pipe. One of these message processing functions attempts to dynamically load the UninOldIS.dll library and executes an exported function named ChangeUninstallString. The default install does not contain this library and therefore if any DLL with that name exists in any directory listed in the PATH variable, it can be used to escalate to SYSTEM level privilege.

NVD Source

Technical Analysis

CVE-2018-16156 requires local access, meaning attackers must already have a foothold on the target system.

Exploitation requires low privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

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 7.8.

A proof-of-concept (PoC) exploit exists for CVE-2018-16156. While not yet confirmed in active campaigns, the availability of PoC code increases exploitation risk substantially.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorLocal
Attack ComplexityLow
Privileges Req.Low
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected Vendors & Products

fujitsu1 product(s)
paperstream ip \(twain\)
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

ADVISORYhttp://packetstormsecurity.com/files/160832/PaperStream-IP-TWAIN-1.42.0.5685-Local-Privilege-Escalation.html
ADVISORYhttps://www.securifera.com/advisories/cve-2018-16156/
ADVISORYhttp://packetstormsecurity.com/files/160832/PaperStream-IP-TWAIN-1.42.0.5685-Local-Privilege-Escalation.html
ADVISORYhttps://www.securifera.com/advisories/cve-2018-16156/

All References (4)

→
http://packetstormsecurity.com/files/160832/PaperStream-IP-TWAIN-1.42.0.5685-Local-Privilege-Escalation.htmlExploit · Third Party Advisory · VDB Entry
→
https://www.securifera.com/advisories/cve-2018-16156/Third Party Advisory
→
http://packetstormsecurity.com/files/160832/PaperStream-IP-TWAIN-1.42.0.5685-Local-Privilege-Escalation.htmlExploit · Third Party Advisory · VDB Entry
→
https://www.securifera.com/advisories/cve-2018-16156/Third Party Advisory

Quick Facts

CVE IDCVE-2018-16156
CVSS Score7.8 / 10
SeverityHIGH
WeaknessCWE-426
CISA KEVNo
ExploitPOC
Affected1 vendor(s)
PublishedMay 17, 2019

Related CVEs (CWE-426)

CVE-2022-26184
9.8
CVE-2011-4125
9.8
CVE-2024-35260
9.8
CVE-2026-45772
9.8
CVE-2020-15801
9.8
CVE-2018-19486
9.8

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2018-16156 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.COM. CVE data is provided under the NVD usage policy.
← All Vulnerabilities·Search for CVE-2018-16156·NVD