CVE-2021-4471Public exploitNetwork attack vector

Credential disclosure via unauthenticated data directory

Published Nov 14, 2025 · Updated Nov 14, 2025

Information disclosure in TG8 Firewall version 0 allows remote attackers to obtain account credentials through unauthenticated HTTP requests. The web interface serves the /data/ directory without authentication even though it stores credential files for previously logged-in users. Any network client that can reach the management HTTP service can enumerate and download those files, exposing valid usernames and passwords for further unauthorized access.

CVSS severity8.7
High
EPSS probability0.64%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Information disclosure in TG8 Firewall version 0 allows remote attackers to obtain account credentials through unauthenticated HTTP requests. The web interface serves the /data/ directory without authentication even though it stores credential files for previously logged-in users. Any network client that can reach the management HTTP service can enumerate and download those files, exposing valid usernames and passwords for further unauthorized access.

The record

CVE
CVE-2021-4471
Published
Nov 14, 2025
Updated
Nov 14, 2025
Vendor
TG8 Security
Product
TG8 Firewall
Classifications
CWE-538, CAPEC-95, T1552.001, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Nov 14, 2025CVE publishedPublication date reported by the CVE source.
  2. Nov 14, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

TG8 Security · TG8 Firewallversion=0

Published CVSS scores

8.7VulnCheckCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-538Insertion of Sensitive Information into Externally-Accessible File or Directory
CAPEC-95WSDL Scanning
T1552.001Unsecured Credentials: Credentials In Files
T1190Exploit Public-Facing Application

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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