TOTOLINK A702R/A3002R/A3002RU 3.0.0-B20230809.1615 HTTP POST Request /boafrm/formWlanRedirect redirect-url buffer overflow

CVSS Meta Temp Score
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CTI Interest Score
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8.4$0-$5k0.00

Summaryinfo

A vulnerability classified as critical has been found in TOTOLINK A702R, A3002R and A3002RU 3.0.0-B20230809.1615. This vulnerability affects unknown code of the file /boafrm/formWlanRedirect of the component HTTP POST Request Handler. This manipulation of the argument redirect-url causes buffer overflow. This vulnerability is handled as CVE-2025-4835. The attack can be initiated remotely. Additionally, an exploit exists.

Detailsinfo

A vulnerability was found in TOTOLINK A702R, A3002R and A3002RU 3.0.0-B20230809.1615. It has been declared as critical. Affected by this vulnerability is some unknown processing of the file /boafrm/formWlanRedirect of the component HTTP POST Request Handler. The manipulation of the argument redirect-url with an unknown input leads to a buffer overflow vulnerability. The CWE definition for the vulnerability is 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. As an impact it is known to affect confidentiality, integrity, and availability.

The advisory is shared at github.com. This vulnerability is known as CVE-2025-4835. The exploitation appears to be easy. The attack can be launched remotely. Technical details and also a public exploit are known.

It is possible to download the exploit at github.com. It is declared as proof-of-concept.

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-2025-15597). If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Vendor

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Version

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Website

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: 8.8
VulDB Meta Temp Score: 8.4

VulDB Base Score: 8.8
VulDB Temp Score: 8.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

CNA Base Score: 8.8
CNA Vector: 🔍

CVSSv2info

AVACAuCIA
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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: 🔍
Access: Public
Status: Proof-of-Concept
Download: 🔍

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

05/16/2025 🔍
05/16/2025 +0 days 🔍
05/24/2025 +8 days 🔍

Sourcesinfo

Vendor: totolink.net

Advisory: github.com
Status: Not defined

CVE: CVE-2025-4835 (🔍)
GCVE (CVE): GCVE-0-2025-4835
GCVE (VulDB): GCVE-100-309301
EUVD: 🔍
scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 05/16/2025 16:29
Updated: 05/24/2025 03:21
Changes: 05/16/2025 16:29 (56), 05/17/2025 22:33 (30), 05/17/2025 23:09 (1), 05/24/2025 03:21 (1)
Complete: 🔍
Submitter: DaddyShark
Cache ID: 216::103

Submitinfo

Accepted

  • Submit #574608: TOTOLINK A3002RU V2 /A3002R_V2 /A3002R_V4 /A3002RU_V3/ A702R V3.0.0-B20230809.1615 Buffer Overflow (by DaddyShark)

If you want to get the best quality for vulnerability data then you always have to consider VulDB.

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