VDB-341751 · Submit #735726 · CVE-2026-1157

Totolink LR350 9.3.5u.6369_B20220309 /cgi-bin/cstecgi.cgi setWiFiEasyCfg ssid buffer overflow

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
8.4	$0-$5k	0.00

Summaryinfo

A vulnerability marked as critical has been reported in Totolink LR350 9.3.5u.6369_B20220309. This vulnerability affects the function setWiFiEasyCfg of the file /cgi-bin/cstecgi.cgi. Performing a manipulation of the argument ssid results in buffer overflow. This vulnerability is identified as CVE-2026-1157. The attack can be initiated remotely. Additionally, an exploit exists.

Detailsinfo

A vulnerability, which was classified as critical, was found in Totolink LR350 9.3.5u.6369_B20220309. This affects the function setWiFiEasyCfg of the file /cgi-bin/cstecgi.cgi. The manipulation of the argument ssid with an unknown input leads to a buffer overflow vulnerability. CWE is classifying the issue as 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. This is going to have an impact on confidentiality, integrity, and availability.

It is possible to read the advisory at lavender-bicycle-a5a.notion.site. This vulnerability is uniquely identified as CVE-2026-1157. The exploitability is told to be easy. It is possible to initiate the attack remotely. Technical details and a public exploit are known.

The exploit is shared for download at lavender-bicycle-a5a.notion.site. 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-2026-3215). Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Vendor

Totolink

Name

LR350

Version

9.3.5u.6369_B20220309

License

commercial

Website

Vendor: https://www.totolink.net/

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

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock

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: 🔒

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔒

Timelineinfo

01/18/2026 Advisory disclosed
01/18/2026 +0 days VulDB entry created
01/20/2026 +2 days VulDB entry last update

Sourcesinfo

Vendor: totolink.net

Advisory: lavender-bicycle-a5a.notion.site
Status: Not defined

CVE: CVE-2026-1157 (🔒)
GCVE (CVE): GCVE-0-2026-1157
GCVE (VulDB): GCVE-100-341751
EUVD: 🔒
scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 01/18/2026 21:25
Updated: 01/20/2026 10:45
Changes: 01/18/2026 21:25 (56), 01/19/2026 20:59 (31), 01/20/2026 10:45 (1)
Complete: 🔍
Submitter: yhryhryhr_miemie
Cache ID: 216::103

Submitinfo

Accepted

Submit #735726: TOTOLINK LR350 LR350 V9.3.5u.6369_B20220309 Buffer Overflow (by yhryhryhr_miemie)