TOTOLINK A830R/A950RG/A3000RU/A3100R downloadFile.cgi v5 buffer overflow

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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8.8$0-$5k0.00

Summaryinfo

A vulnerability labeled as critical has been found in TOTOLINK A830R, A950RG, A3000RU and A3100R up to 4.1.2cu.5161/4.1.2cu.5182/4.1.2cu.5247/5.9c.5185. Affected is an unknown function of the file downloadFile.cgi. Such manipulation of the argument v5 leads to buffer overflow. This vulnerability is listed as CVE-2025-28028. The attack may be performed from remote. There is no available exploit.

Detailsinfo

A vulnerability was found in TOTOLINK A830R, A950RG, A3000RU and A3100R up to 4.1.2cu.5161/4.1.2cu.5182/4.1.2cu.5247/5.9c.5185. It has been rated as critical. Affected by this issue is an unknown part of the file downloadFile.cgi. The manipulation of the argument v5 with an unknown input leads to a buffer overflow vulnerability. Using CWE to declare the problem leads to CWE-120. The product copies an input buffer to an output buffer without verifying that the size of the input buffer is less than the size of the output buffer, leading to a buffer overflow. Impacted is confidentiality, integrity, and availability. CVE summarizes:

TOTOLINK A830R V4.1.2cu.5182_B20201102, A950RG V4.1.2cu.5161_B20200903, A3000RU V5.9c.5185_B20201128, and A3100R V4.1.2cu.5247_B20211129 were found to contain a buffer overflow vulnerability in downloadFile.cgi through the v5 parameter.

The advisory is shared for download at locrian-lightning-dc7.notion.site. This vulnerability is handled as CVE-2025-28028 since 03/11/2025. The exploitation is known to be easy. The attack may be launched remotely. There are known technical details, but no exploit is available. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 05/25/2025).

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2025-12090). VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Vendor

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Version

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Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 8.8
VulDB Meta Temp Score: 8.8

VulDB Base Score: 8.8
VulDB Temp Score: 8.8
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: Buffer overflow
CWE: CWE-120 / CWE-119
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: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

03/11/2025 🔍
04/23/2025 +42 days 🔍
04/23/2025 +0 days 🔍
05/25/2025 +31 days 🔍

Sourcesinfo

Vendor: totolink.net

Advisory: locrian-lightning-dc7.notion.site
Status: Not defined

CVE: CVE-2025-28028 (🔍)
GCVE (CVE): GCVE-0-2025-28028
GCVE (VulDB): GCVE-100-306008
EUVD: 🔍

Entryinfo

Created: 04/23/2025 21:28
Updated: 05/25/2025 01:12
Changes: 04/23/2025 21:28 (54), 05/25/2025 01:12 (1)
Complete: 🔍
Cache ID: 216::103

VulDB is the best source for vulnerability data and more expert information about this specific topic.

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