EUVD-2026-31752
GHSA-94gf-5wp7-whqp
Severity by source
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Primary rating from NVD · only source for this CVE.
CVSS VectorNVD
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Lifecycle Timeline
3DescriptionCVE.org
A security vulnerability has been detected in Totolink CA750-PoE 6.2c.510. Impacted is the function setNetworkDiag of the file /cgi-bin/cstecgi.cgi of the component Setting Handler. The manipulation of the argument NetDiagHost/NetDiagPingNum/NetDiagPingSize/NetDiagPingTimeOut/NetDiagTracertHop is directly passed by the attacker/so we can control the NetDiagHost/NetDiagPingNum/NetDiagPingSize/NetDiagPingTimeOut/NetDiagTracertHop leads to os command injection. The attack may be initiated remotely. The exploit has been disclosed publicly and may be used.
AnalysisAI
OS command injection in Totolink CA750-PoE firmware 6.2c.510 allows authenticated remote attackers to execute arbitrary operating system commands by manipulating network diagnostic parameters in the device's CGI handler. The vulnerable function setNetworkDiag, reachable at /cgi-bin/cstecgi.cgi, passes attacker-controlled values for NetDiagHost, NetDiagPingNum, NetDiagPingSize, NetDiagPingTimeOut, and NetDiagTracertHop directly into OS command execution without sanitization. …
Unlock full vulnerability intelligence
- Risk assessment & exploitation conditions
- Attack chain visualization
- Remediation with exact patch versions
- Threat intelligence from 22 sources
- Personal watchlist & email alerts
Free forever · No credit card required
Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Authentication is required: the CVSS 4.0 vector specifies PR:L (low privileges required), meaning the attacker must hold at least a low-privileged account on the device's web management interface before exploitation is possible. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 4.0 base score of 2.1 is anomalously low for an OS command injection with a network attack vector (AV:N) and appears to be driven by the scoring of all vulnerability impact metrics at Low (VC:L/VI:L/VA:L) and no subsequent system scope impact (SC:N/SI:N/SA:N). … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | An attacker with low-privilege credentials to the Totolink CA750-PoE web management interface - obtained through default credentials, credential stuffing, or prior access - sends a crafted HTTP POST request to /cgi-bin/cstecgi.cgi targeting the setNetworkDiag action, injecting OS command syntax (e.g., semicolons, backticks, or pipe characters) into the NetDiagHost or NetDiagTracertHop parameters. The device's firmware passes the unsanitized value directly to a shell command for ping or traceroute execution, causing the injected commands to run with the privilege level of the CGI process. … |
| Remediation | No vendor-released patch has been identified at time of analysis; no fix version was published by Totolink in any referenced advisory. … Detailed patch versions, workarounds, and compensating controls in full report. |
Threat intelligence, references, and detailed analysis are available after sign-in.
Share
External POC / Exploit Code
Leaving vuln.today