TOTOLINK EX200 5.2.3c.7200 lan.so /cgi-bin/cstecgi.cgi setStaticDhcpConfig comment 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-$5k2.46

Summaryinfo

A vulnerability identified as very critical has been detected in TOTOLINK EX200 5.2.3c.7200. This impacts the function setStaticDhcpConfig of the file /cgi-bin/cstecgi.cgi of the component lan.so. This manipulation of the argument Comment causes stack-based overflow. This vulnerability is handled as CVE-2026-114382. The attack can be initiated remotely. Additionally, an exploit exists.

Detailsinfo

A vulnerability has been found in TOTOLINK EX200 5.2.3c.7200 and classified as very critical. Affected by this vulnerability is the function setStaticDhcpConfig of the file /cgi-bin/cstecgi.cgi of the component lan.so. The manipulation of the argument comment 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 advisory is shared at github.com. This vulnerability is known as CVE-2026-114382. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. Technical details and also a public exploit are known. The price for an exploit might be around USD $0-$5k at the moment (estimation calculated on 10/21/2026).

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.

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: 🔍

CVSSv3info

VulDB Meta Base Score: 10.0
VulDB Meta Temp Score: 9.1

VulDB Base Score: 10.0
VulDB Temp Score: 9.1
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: 🔒
Access: Public
Status: Proof-of-Concept
Download: 🔒
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

10/21/2026 Advisory disclosed
10/21/2026 +0 days VulDB entry created
10/21/2026 +0 days VulDB entry last update

Sourcesinfo

Vendor: totolink.net

Advisory: github.com
Status: Not defined

CVE: CVE-2026-114382 (🔒)
GCVE (CVE): GCVE-0-2026-114382
GCVE (VulDB): GCVE-100-424741
scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 10/21/2026 13:31
Changes: 10/21/2026 13:31 (57)
Complete: 🔍
Submitter: zeroxf
Cache ID: 216::103

Submitinfo

Accepted

  • Submit #1019881: TOTOLINK EX200 V5.2.3c.7200 Stack-based Buffer Overflow (by zeroxf)

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

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