Cypress CTM-200 2.7.1 Firmware Upgrade ctm-config-upgrade.sh fw_url os command injection

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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8.6$0-$5k0.00

Summaryinfo

A vulnerability has been found in Cypress CTM-200 2.7.1 and classified as critical. This affects an unknown part of the file ctm-config-upgrade.sh of the component Firmware Upgrade Handler. The manipulation of the argument fw_url leads to os command injection. This vulnerability is traded as CVE-2021-47745. It is possible to initiate the attack remotely. There is no exploit available. The affected component should be upgraded.

Detailsinfo

A vulnerability was found in Cypress CTM-200 2.7.1. It has been rated as critical. This issue affects an unknown part of the file ctm-config-upgrade.sh of the component Firmware Upgrade Handler. The manipulation of the argument fw_url with an unknown input leads to a os command injection vulnerability. Using CWE to declare the problem leads to 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. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

Cypress Solutions CTM-200 2.7.1 contains an authenticated command injection vulnerability in the firmware upgrade script that allows remote attackers to execute shell commands. Attackers can exploit the 'fw_url' parameter in the ctm-config-upgrade.sh script to inject and execute arbitrary commands with root privileges.

The weakness was shared by Gjoko Krstic as 50408. The advisory is shared at exploit-db.com. The identification of this vulnerability is CVE-2021-47745 since 12/31/2025. The exploitation is known to be easy. The attack may be initiated remotely. Technical details are known, but no exploit is available. MITRE ATT&CK project uses the attack technique T1202 for this issue.

Upgrading eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2025-206089). Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Vendor

Name

Version

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: 8.6

VulDB Base Score: 8.8
VulDB Temp Score: 8.4
VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA Base Score: 8.8
CNA Vector (VulnCheck): 🔒

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: 🔒
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: Upgrade
Status: 🔍

0-Day Time: 🔒

Timelineinfo

12/31/2025 Advisory disclosed
12/31/2025 +0 days CVE reserved
12/31/2025 +0 days VulDB entry created
01/01/2026 +1 days VulDB entry last update

Sourcesinfo

Advisory: 50408
Researcher: Gjoko Krstic
Status: Confirmed

CVE: CVE-2021-47745 (🔒)
GCVE (CVE): GCVE-0-2021-47745
GCVE (VulDB): GCVE-100-339209
EUVD: 🔒

Entryinfo

Created: 12/31/2025 20:00
Updated: 01/01/2026 22:14
Changes: 12/31/2025 20:00 (79), 01/01/2026 22:14 (1)
Complete: 🔍
Cache ID: 216::103

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

Discussion

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