Totolink LR350 9.3.5u.6369_B20220309 sub_421BAC ssid stack-based overflow

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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8.5$0-$5k0.00

Summaryinfo

A vulnerability categorized as critical has been discovered in Totolink LR350 9.3.5u.6369_B20220309. The affected element is the function sub_421BAC. Such manipulation of the argument ssid leads to stack-based overflow. This vulnerability is uniquely identified as CVE-2025-63469. The attack can be launched remotely. No exploit exists.

Detailsinfo

A vulnerability, which was classified as critical, has been found in Totolink LR350 9.3.5u.6369_B20220309. Affected by this issue is the function sub_421BAC. The manipulation of the argument ssid with an unknown input leads to a stack-based overflow vulnerability. Using CWE to declare the problem leads to CWE-121. A stack-based buffer overflow condition is a condition where the buffer being overwritten is allocated on the stack (i.e., is a local variable or, rarely, a parameter to a function). Impacted is confidentiality, integrity, and availability. CVE summarizes:

Totolink LR350 v9.3.5u.6369_B20220309 was discovered to contain a stack overflow via the ssid parameter in the sub_421BAC function. This vulnerability allows attackers to cause a Denial of Service (DoS) via a crafted request.

The advisory is available at github.com. This vulnerability is handled as CVE-2025-63469 since 10/27/2025. The exploitation is known to be easy. The attack may be launched remotely. Technical details are known, but there is no available exploit. The structure of the vulnerability defines a possible price range of USD $0-$5k at the moment (estimation calculated on 11/01/2025).

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-2025-37368). If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

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

Exploitinginfo

Class: Stack-based overflow
CWE: CWE-121 / 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

10/27/2025 CVE reserved
10/31/2025 +4 days Advisory disclosed
10/31/2025 +0 days VulDB entry created
11/01/2025 +0 days VulDB entry last update

Sourcesinfo

Vendor: totolink.net

Advisory: github.com
Status: Not defined

CVE: CVE-2025-63469 (🔒)
GCVE (CVE): GCVE-0-2025-63469
GCVE (VulDB): GCVE-100-330842
EUVD: 🔒

Entryinfo

Created: 10/31/2025 22:38
Updated: 11/01/2025 00:23
Changes: 10/31/2025 22:38 (54), 11/01/2025 00:23 (1)
Complete: 🔍
Cache ID: 216::103

If you want to get best quality of vulnerability data, you may have to visit VulDB.

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