HOMEVULNERABILITIESCVE-2022-40984
CRITICAL

CVE-2022-40984

CWE-787Published: October 24, 2022· Updated: Jun 17, 2026

9.8
CVSS v3.1

Official Description

Stack-based buffer overflow in WTViewerE series WTViewerE 761941 from 1.31 to 1.61 and WTViewerEfree from 1.01 to 1.52 allows an attacker to cause the product to crash by processing a long file name.

NVD Source

Technical Analysis

CVE-2022-40984 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.

From a weakness classification perspective (CWE-787): Out-of-bounds write vulnerabilities can lead to data corruption, crashes, or arbitrary code execution.

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

yokogawa2 product(s)
wtviewere 761941wtviewerefree
Source: NVD CPE · 2 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

ADVISORYhttps://cdn.aff.yokogawa.com/8/756/details/Vulnerability_in_YOKOGAWA_application_software_WTViewerE_r0_e.pdf
ADVISORYhttps://jvn.jp/en/vu/JVNVU99955870/index.html
ADVISORYhttps://cdn.aff.yokogawa.com/8/756/details/Vulnerability_in_YOKOGAWA_application_software_WTViewerE_r0_e.pdf
ADVISORYhttps://jvn.jp/en/vu/JVNVU99955870/index.html

All References (4)

→
https://cdn.aff.yokogawa.com/8/756/details/Vulnerability_in_YOKOGAWA_application_software_WTViewerE_r0_e.pdfVendor Advisory
→
https://jvn.jp/en/vu/JVNVU99955870/index.htmlThird Party Advisory
→
https://cdn.aff.yokogawa.com/8/756/details/Vulnerability_in_YOKOGAWA_application_software_WTViewerE_r0_e.pdfVendor Advisory
→
https://jvn.jp/en/vu/JVNVU99955870/index.htmlThird Party Advisory

Quick Facts

CVE IDCVE-2022-40984
CVSS Score9.8 / 10
SeverityCRITICAL
WeaknessCWE-787
CISA KEVNo
Affected1 vendor(s)
PublishedOct 24, 2022

Related CVEs (CWE-787)

CVE-2026-4746
10.0
CVE-2004-0978
10.0
CVE-2009-2466
10.0
CVE-2026-42369
10.0
CVE-2002-2227
10.0
CVE-2011-1807
10.0

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2022-40984 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.
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