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CVE-2021-20674

24
FAUCET Score

CVE-2021-20674 describes an untrusted search path vulnerability in the installer for MagicConnect Client programs released before March 2021, affecting NTT-TX MagicConnect products. This flaw allows an attacker to gain elevated privileges and execute arbitrary code by introducing a malicious DLL into an unspecified directory, which is then loaded when a remote desktop connection is established. The vulnerability carries a high CVSS score of 7.8, indicating a local attack vector with low complexity, requiring user interaction, and leading to high impact on confidentiality, integrity, and availability. Currently, there is no evidence of active exploitation, no public exploit code (Metasploit, Nuclei, ExploitDB), and minimal community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
< 2021-03-01CPE matchmatch criteria
cpe:2.3:a:ntt-tx:magicconnect:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.8HIGH

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
1.8
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.92%
Probability of exploitation in next 30 days
EPSS Percentile
56.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0092 is in the 53rd percentile among its peer group of 11,621 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

jvn.jp / en/jp/JVN18056666/index.html
Third Party Advisory
magicconnect.net / information/202103110900-2
Vendor Advisory