TOTOLINK A950RG 4.1.2cu.5204_B20210112 ipv6.so radvdinterfacename 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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9.1$0-$5k0.00

Summaryinfo

A vulnerability marked as critical has been reported in TOTOLINK A950RG 4.1.2cu.5204_B20210112. The impacted element is an unknown function in the library /lib/cste_modules/ipv6.so. This manipulation of the argument radvdinterfacename causes stack-based overflow. This vulnerability is handled as CVE-2025-67188. The attack can be initiated remotely. There is not any exploit available.

Detailsinfo

A vulnerability was found in TOTOLINK A950RG 4.1.2cu.5204_B20210112. It has been declared as critical. Affected by this vulnerability is an unknown code in the library /lib/cste_modules/ipv6.so. The manipulation of the argument radvdinterfacename with an unknown input leads to a stack-based overflow vulnerability. The CWE definition for the vulnerability is 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). As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

A buffer overflow vulnerability exists in TOTOLINK A950RG V4.1.2cu.5204_B20210112. The issue resides in the setRadvdCfg interface of the /lib/cste_modules/ipv6.so module. The function fails to properly validate the length of the user-controlled radvdinterfacename parameter, allowing remote attackers to trigger a stack buffer overflow.

It is possible to read the advisory at github.com. This vulnerability is known as CVE-2025-67188 since 12/08/2025. The exploitation appears to be easy. The attack can be launched remotely. Technical details of the vulnerability are known, but there is no available exploit. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 02/10/2026).

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

Statistical analysis made it clear that VulDB provides the best quality for 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: 9.3
VulDB Meta Temp Score: 9.1

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

ADP CISA Base Score: 9.8
ADP CISA Vector: 🔒

CVSSv2info

AVACAuCIA
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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

12/08/2025 CVE reserved
02/03/2026 +57 days Advisory disclosed
02/03/2026 +0 days VulDB entry created
02/10/2026 +7 days VulDB entry last update

Sourcesinfo

Vendor: totolink.net

Advisory: github.com
Status: Not defined

CVE: CVE-2025-67188 (🔒)
GCVE (CVE): GCVE-0-2025-67188
GCVE (VulDB): GCVE-100-344131

Entryinfo

Created: 02/03/2026 21:26
Updated: 02/10/2026 15:24
Changes: 02/03/2026 21:26 (54), 02/10/2026 15:24 (11)
Complete: 🔍
Cache ID: 216::103

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