code-projects for Plugin 4.1.2cu.5137 /cgi-bin/cstecgi.cgi setWiFiMultipleConfig wepkey2 buffer overflow

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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8.0$0-$5k0.00

Summaryinfo

A vulnerability identified as critical has been detected in code-projects for Plugin 4.1.2cu.5137. This affects the function setWiFiMultipleConfig in the library /lib/cste_modules/wireless.so of the file /cgi-bin/cstecgi.cgi. This manipulation of the argument wepkey2 causes buffer overflow. This vulnerability appears as CVE-2026-7503. The attack may be initiated remotely. In addition, an exploit is available.

Detailsinfo

A vulnerability was found in code-projects for Plugin 4.1.2cu.5137. It has been declared as critical. Affected by this vulnerability is the function setWiFiMultipleConfig in the library /lib/cste_modules/wireless.so of the file /cgi-bin/cstecgi.cgi. The manipulation of the argument wepkey2 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.

The advisory is shared at github.com. This vulnerability is known as CVE-2026-7503. The exploitation appears to be easy. The attack can be launched remotely. Technical details and also a public exploit are known.

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.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2026-26450). Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

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Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 8.8
VulDB Meta Temp Score: 8.0

VulDB Base Score: 8.8
VulDB Temp Score: 8.0
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: 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: 🔒

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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔒

Timelineinfo

04/30/2026 Advisory disclosed
04/30/2026 +0 days VulDB entry created
05/01/2026 +1 days VulDB entry last update

Sourcesinfo

Vendor: code-projects.org

Advisory: github.com
Status: Not defined

CVE: CVE-2026-7503 (🔒)
GCVE (CVE): GCVE-0-2026-7503
GCVE (VulDB): GCVE-100-360313
EUVD: 🔒
scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 04/30/2026 16:50
Updated: 05/01/2026 04:29
Changes: 04/30/2026 16:50 (58), 05/01/2026 04:29 (1)
Complete: 🔍
Submitter: xuanyu
Cache ID: 216::103

Submitinfo

Accepted

  • Submit #803120: TOTOLINK A800R V4.1.2cu.5137_B20200730 Stack-based Buffer Overflow (by xuanyu)

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Discussion

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