EUVD-2026-63573
GHSA-j7x2-7p87-73vg
Severity by source
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/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
PR:L reflects required low-privilege authentication per CVSS 4.0 vector; S:U as RCE is directly scoped to the router's own OS.
Primary rating from Vendor (VulDB).
CVSS VectorVendor: VulDB
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/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
6DescriptionCVE.org
A vulnerability was found in Comfast CF-N1-S 2.6.0.1. This impacts the function sub_44B50C of the file /cgi-bin/mbox-config?method=SET§ion=ptest_channel of the component Web Management. The manipulation results in stack-based buffer overflow. The attack can be launched remotely. The exploit has been made public and could be used.
AnalysisAI
Stack-based buffer overflow in the Comfast CF-N1-S firmware version 2.6.0.1 allows remote attackers with low-privilege web management credentials to achieve arbitrary code execution on the device. The vulnerable function sub_44B50C, reachable via the CGI endpoint /cgi-bin/mbox-config?method=SET§ion=ptest_channel, fails to bounds-check user-supplied input before copying it onto the stack. …
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 | Exploitation requires authenticated access to the Comfast CF-N1-S web management HTTP interface - the CVSS 4.0 PR:L metric confirms that low-privilege credentials are sufficient; unauthenticated exploitation is not supported by the available data. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 4.0 score of 8.6 reflects high impact across all three pillars - confidentiality, integrity, and availability - on both the vulnerable system and subsequent systems (SC:H/SI:H/SA:H), acknowledging that a compromised router affects all downstream network traffic and connected devices. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | An attacker who has obtained low-privilege credentials to the Comfast CF-N1-S web management interface - through default credentials, credential stuffing, or prior access - sends a crafted HTTP POST request to `/cgi-bin/mbox-config?method=SET§ion=ptest_channel` with an oversized `ptest_channel` value. The function sub_44B50C copies this input into a fixed-size stack buffer without bounds checking, overwriting the saved return address and enabling control-flow redirection to attacker-controlled shellcode. … |
| Remediation | No vendor-released patch has been identified at the time of analysis - no fixed firmware version appears in the available references from VulDB or ENISA EUVD-2026-63573. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours: Audit all Comfast CF-N1-S deployments and identify firmware versions in use; immediately restrict network access to the web management interface via firewall rules limiting access to trusted administrative IP ranges only. …
Sign in for detailed remediation steps and compensating controls.
Threat intelligence, references, and detailed analysis are available after sign-in.
Remote command injection in Comfast CF-N1-S firmware 2.6.0.1 allows a low-privilege authenticated attacker to execute ar
Stack-based buffer overflow in the Comfast CF-N1-S 2.6.0.1 web management interface enables remote code execution via th
Stack-based buffer overflow in Comfast CF-N1-S firmware 2.6.0.1 allows authenticated remote attackers to execute arbitra
Remote unauthenticated stack-based buffer overflow in the Comfast CF-N1-S wireless device (firmware 2.6.0.1) lets attack
Command injection in COMFAST CF-N1-S firmware 2.6.0.1 allows remote authenticated attackers to execute arbitrary OS comm
Command injection in the Comfast CF-N1-S firmware 2.6.0.1 CGI management interface allows remote low-privileged attacker
Command injection in the Comfast CF-N1-S router version 2.6.0.1 allows an authenticated remote attacker to execute arbit
Same weakness CWE-121 – Stack-based Buffer Overflow
View allSame technique Stack Overflow
View allShare
External POC / Exploit Code
Leaving vuln.today