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CVE-2020-5639

26
FAUCET Score

CVE-2020-5639 is a critical directory traversal vulnerability affecting FileZen versions V3.0.0 through V4.2.2, allowing remote attackers to upload arbitrary files to specific directories. This flaw can lead to arbitrary operating system command execution, posing a significant risk to affected systems. With a CVSS score of 9.8 (CRITICAL), it requires no user interaction or authentication, making it easily exploitable over the network. Despite its high severity, there is currently no public exploit code available, nor any evidence of active exploitation or significant community discussion.

Impacted Technologies

VendorProductVersion(s)CPE
>= 3.0.0, <= 4.2.2CPE matchmatch criteria
cpe:2.3:a:soliton:filezen:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

9.8CRITICAL

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
5.01%
Probability of exploitation in next 30 days
EPSS Percentile
91.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.0501 is in the 85th percentile among its peer group of 36,835 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 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/JVN12884935/index.html
Third Party Advisory
jvn.jp / jp/JVN12884935/index.html
Third Party Advisory
soliton.co.jp / support/2020/004278.html
Vendor Advisory