TOTOLINK A800R 4.1.2cu.5137_B20200730 downloadFile.cgi buffer overflow

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
8.8$0-$5k0.00

Summaryinfo

A vulnerability marked as critical has been reported in TOTOLINK A800R 4.1.2cu.5137_B20200730. Affected is an unknown function of the file downloadFile.cgi. The manipulation leads to buffer overflow. This vulnerability is documented as CVE-2025-28136. The attack can be initiated remotely. There is not any exploit available.

Detailsinfo

A vulnerability was found in TOTOLINK A800R 4.1.2cu.5137_B20200730. It has been rated as critical. This issue affects an unknown code of the file downloadFile.cgi. The manipulation 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. The summary by CVE is:

TOTOLINK A800R V4.1.2cu.5137_B20200730 was found to contain a buffer overflow vulnerability in the downloadFile.cgi.

The advisory is shared at sudsy-eyeliner-a59.notion.site. The identification of this vulnerability is CVE-2025-28136 since 03/11/2025. The exploitation is known to be easy. The attack may be initiated remotely. Technical details are known, but no exploit is available. The price for an exploit might be around USD $0-$5k at the moment (estimation calculated on 05/24/2025).

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-2025-10968). Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Vendor

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Version

License

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 🔍
04/15/2025 +34 days 🔍
04/15/2025 +0 days 🔍
05/24/2025 +39 days 🔍

Sourcesinfo

Vendor: totolink.net

Advisory: sudsy-eyeliner-a59.notion.site
Status: Not defined

CVE: CVE-2025-28136 (🔍)
GCVE (CVE): GCVE-0-2025-28136
GCVE (VulDB): GCVE-100-304721
EUVD: 🔍

Entryinfo

Created: 04/15/2025 16:23
Updated: 05/24/2025 20:23
Changes: 04/15/2025 16:23 (53), 05/24/2025 20:23 (1)
Complete: 🔍
Cache ID: 216::103

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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