Totolink CA750-PoE 6.2c.510 Setting /cgi-bin/cstecgi.cgi recvUpgradeNewFw fwUrl/magicid os command injection

CVSS Meta Temp Score
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CTI Interest Score
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5.7$0-$5k0.00

Summaryinfo

A vulnerability was found in Totolink CA750-PoE 6.2c.510. It has been declared as critical. This affects the function recvUpgradeNewFw of the file /cgi-bin/cstecgi.cgi of the component Setting Handler. Executing a manipulation of the argument fwUrl/magicid can lead to os command injection. This vulnerability is registered as CVE-2026-9533. It is possible to launch the attack remotely. Furthermore, an exploit is available.

Detailsinfo

A vulnerability was found in Totolink CA750-PoE 6.2c.510. It has been declared as critical. This vulnerability affects the function recvUpgradeNewFw of the file /cgi-bin/cstecgi.cgi of the component Setting Handler. The manipulation of the argument fwUrl/magicid with an unknown input leads to a os command injection vulnerability. The CWE definition for the vulnerability is CWE-78. The product constructs all or part of an OS command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended OS command when it is sent to a downstream component. As an impact it is known to affect confidentiality, integrity, and availability.

The advisory is shared for download at github.com. This vulnerability was named CVE-2026-9533. The exploitation appears to be easy. The attack can be initiated remotely. Technical details and also a public exploit are known. The MITRE ATT&CK project declares the attack technique as T1202.

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-2026-31791). VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.3
VulDB Meta Temp Score: 5.7

VulDB Base Score: 6.3
VulDB Temp Score: 5.7
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: Os command injection
CWE: CWE-78 / CWE-77 / CWE-74
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

05/25/2026 Advisory disclosed
05/25/2026 +0 days VulDB entry created
05/26/2026 +1 days VulDB entry last update

Sourcesinfo

Vendor: totolink.net

Advisory: github.com
Status: Not defined

CVE: CVE-2026-9533 (🔒)
GCVE (CVE): GCVE-0-2026-9533
GCVE (VulDB): GCVE-100-365560
EUVD: 🔒
scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 05/25/2026 21:49
Updated: 05/26/2026 10:48
Changes: 05/25/2026 21:49 (57), 05/26/2026 10:48 (1)
Complete: 🔍
Submitter: Buoy_yes
Cache ID: 216::103

Submitinfo

Accepted

  • Submit #813937: TOTOLink CA750-PoE V6.2c.510 Command Injection (by Buoy_yes)

VulDB is the best source for vulnerability data and more expert information about this specific topic.

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