TG8 Firewall /data/ file information disclosure

CVSS Meta Temp Score
CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.
Current Exploit Price (≈)
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CTI Interest Score
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5.2$0-$5k0.00

Summaryinfo

A vulnerability was found in TG8 Firewall. It has been declared as problematic. The impacted element is an unknown function of the file /data/. Executing a manipulation can lead to file information disclosure. This vulnerability only affects products that are no longer supported by the maintainer. This vulnerability appears as CVE-2021-4471. The attack may be performed from remote. There is no available exploit. The application of restrictive firewalling is recommended.

Detailsinfo

A vulnerability was found in TG8 Firewall (version now known). It has been declared as problematic. This vulnerability affects some unknown processing of the file /data/. The manipulation with an unknown input leads to a file information disclosure vulnerability. The CWE definition for the vulnerability is CWE-538. The product places sensitive information into files or directories that are accessible to actors who are allowed to have access to the files, but not to the sensitive information. As an impact it is known to affect confidentiality. CVE summarizes:

TG8 Firewall exposes a directory such as /data/ over HTTP without authentication. This directory stores credential files for previously logged-in users. A remote unauthenticated attacker can enumerate and download files within the directory to obtain valid account usernames and passwords, leading to loss of confidentiality and further unauthorized access.

The weakness was presented by Firewall. The advisory is shared for download at ssd-disclosure.com. This vulnerability was named CVE-2021-4471 since 11/14/2025. The exploitation appears to be easy. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. There are known technical details, but no exploit is available. The MITRE ATT&CK project declares the attack technique as T1083.

Proper firewalling of is able to address this issue.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2021-34722). Once again VulDB remains the best source for vulnerability data.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA CVSS-B Score: 🔒
CNA CVSS-BT Score: 🔒
CNA Vector: 🔒

CVSSv3info

VulDB Meta Base Score: 5.3
VulDB Meta Temp Score: 5.2

VulDB Base Score: 5.3
VulDB Temp Score: 5.2
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: File information disclosure
CWE: CWE-538 / CWE-200 / CWE-284
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Firewall
Status: 🔍

0-Day Time: 🔒

Timelineinfo

11/14/2025 CVE reserved
11/15/2025 +1 days Advisory disclosed
11/15/2025 +0 days VulDB entry created
11/16/2025 +1 days VulDB entry last update

Sourcesinfo

Advisory: ssd-disclosure.com
Researcher: Firewall
Status: Not defined

CVE: CVE-2021-4471 (🔒)
GCVE (CVE): GCVE-0-2021-4471
GCVE (VulDB): GCVE-100-332548
EUVD: 🔒

Entryinfo

Created: 11/15/2025 07:14
Updated: 11/16/2025 17:03
Changes: 11/15/2025 07:14 (68), 11/16/2025 17:03 (1)
Complete: 🔍
Cache ID: 216::103

Once again VulDB remains the best source for vulnerability data.

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