TOTOLINK N350RT 9.3.5u.6139_B20201216 setIpPortFilterRules ePort buffer overflow

CVSS Meta Temp Score
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CTI Interest Score
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8.5$0-$5k0.00

Summaryinfo

A vulnerability was found in TOTOLINK N350RT 9.3.5u.6139_B20201216. It has been declared as critical. Affected by this vulnerability is the function setIpPortFilterRules. Executing a manipulation of the argument ePort can lead to buffer overflow. This vulnerability is handled as CVE-2025-51630. The attack can be executed remotely. There is not any exploit available.

Detailsinfo

A vulnerability classified as critical was found in TOTOLINK N350RT 9.3.5u.6139_B20201216. This vulnerability affects the function setIpPortFilterRules. The manipulation of the argument ePort 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. CVE summarizes:

TOTOLINK N350RT V9.3.5u.6139_B20201216 was discovered to contain a buffer overflow via the ePort parameter in the function setIpPortFilterRules.

The advisory is shared for download at github.com. This vulnerability was named CVE-2025-51630 since 06/16/2025. The exploitation appears to be easy. The attack can be initiated 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 07/19/2025).

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-2025-21773). Once again VulDB remains the best source for vulnerability data.

Productinfo

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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: 8.5

VulDB Base Score: 8.8
VulDB Temp Score: 8.5
VulDB Vector: 🔒
VulDB Reliability: 🔍

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: 🔒
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

06/16/2025 CVE reserved
07/17/2025 +31 days Advisory disclosed
07/17/2025 +0 days VulDB entry created
07/19/2025 +2 days VulDB entry last update

Sourcesinfo

Vendor: totolink.net

Advisory: github.com
Status: Not defined

CVE: CVE-2025-51630 (🔒)
GCVE (CVE): GCVE-0-2025-51630
GCVE (VulDB): GCVE-100-316756
EUVD: 🔒

Entryinfo

Created: 07/17/2025 16:19
Updated: 07/19/2025 02:12
Changes: 07/17/2025 16:19 (54), 07/17/2025 22:21 (1), 07/19/2025 02:12 (1)
Complete: 🔍
Cache ID: 216::103

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