HOMEVULNERABILITIESCVE-2021-34683
MEDIUM

CVE-2021-34683

NVD-CWE-noinfoPublished: June 16, 2021· Updated: Jun 17, 2026

5.3
CVSS v3.1

Official Description

An issue was discovered in EXCELLENT INFOTEK CORPORATION (EIC) E-document System 3.0. A remote attacker can use kw/auth/bbs/asp/get_user_email_info_bbs.asp to obtain the contact information (name and e-mail address) of everyone in the entire organization. This information can allow remote attackers to perform social engineering or brute force attacks against the system login page.

NVD Source

Technical Analysis

CVE-2021-34683 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.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges Req.None
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityLow
IntegrityNone
AvailabilityNone
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

Affected Vendors & Products

eic1 product(s)
e-document system
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

ADVISORYhttps://github.com/ethancsyang/CveProject/tree/main/CVE-2021-34683
ADVISORYhttps://www.eic.com.tw/eicHome/pro00.html
ADVISORYhttps://github.com/ethancsyang/CveProject/tree/main/CVE-2021-34683
ADVISORYhttps://www.eic.com.tw/eicHome/pro00.html

All References (4)

→
https://github.com/ethancsyang/CveProject/tree/main/CVE-2021-34683Third Party Advisory
→
https://www.eic.com.tw/eicHome/pro00.htmlVendor Advisory
→
https://github.com/ethancsyang/CveProject/tree/main/CVE-2021-34683Third Party Advisory
→
https://www.eic.com.tw/eicHome/pro00.htmlVendor Advisory

Quick Facts

CVE IDCVE-2021-34683
CVSS Score5.3 / 10
SeverityMEDIUM
WeaknessNVD-CWE-noinfo
CISA KEVNo
Affected1 vendor(s)
PublishedJun 16, 2021

Related CVEs (NVD-CWE-noinfo)

CVE-2010-2900
10.0
CVE-2007-1319
10.0
CVE-2007-0980
10.0
CVE-2007-0910
10.0
CVE-2007-1134
10.0
CVE-2007-1796
10.0

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2021-34683 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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