EUVD-2026-31816
GHSA-85g8-3qwj-fmpv
Severity by source
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/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:N/UI:N/VC:H/VI:H/VA:H/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 vulnerability has been found in Totolink N300RH 6.1c.1353_B20190305. Affected is the function setPasswordCfg of the file /cgi-bin/cstecgi.cgi of the component Web Management Interface. Such manipulation of the argument admpass leads to os command injection. The attack can be executed remotely. The exploit has been disclosed to the public and may be used.
AnalysisAI
OS command injection in the Totolink N300RH router (firmware 6.1c.1353_B20190305) allows remote unauthenticated attackers to execute arbitrary operating system commands by manipulating the admpass argument sent to the setPasswordCfg function in /cgi-bin/cstecgi.cgi. Publicly available exploit code exists, and the SSVC framework rates technical impact as total with automatable exploitation, though EPSS remains low at 0.20%. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | The attacker must have network reachability to the router's Web Management Interface (TCP port serving /cgi-bin/cstecgi.cgi) and the target must be running firmware 6.1c.1353_B20190305 on a Totolink N300RH. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 4.0 vector AV:N/AC:L/AT:N/PR:N/UI:N with VC:H/VI:H/VA:H yields a score of 8.9, reflecting that exploitation requires only network reachability to the management interface with no privileges or user interaction, and yields total compromise of confidentiality, integrity, and availability. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | An attacker reachable to the router's web management interface - either across the internet if remote management is enabled, or from any host on the LAN - sends a single crafted HTTP POST request to /cgi-bin/cstecgi.cgi invoking setPasswordCfg with an admpass value containing shell metacharacters such as `;` or backticks. The injected command executes as the web server process (typically root on embedded Linux), allowing the attacker to drop a backdoor, pivot into the internal network, or enlist the device into a botnet. … |
| Remediation | No vendor-released patch identified at time of analysis - Totolink has not published a fixed firmware version in the provided references. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours: Scan network inventory for all Totolink N300RH devices; document firmware version (particularly 6.1c.1353_B20190305 and other 6.1c variants) and network locations. …
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