EUVD-2026-62213
GHSA-h8w7-jqg9-6hfv
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
Network-accessible CGI endpoint requires authenticated session (PR:L); full device compromise with downstream network impact justifies changed scope (S:C) and high C/I/A.
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
2DescriptionCVE.org
A weakness has been identified in TRENDnet TEW-823DRU 1.1.02b01. Impacted is the function strcpy of the file /cgi-bin/wan.cgi of the component NVRAM. This manipulation of the argument wan_l2tp_password causes stack-based buffer overflow. The attack can be initiated remotely. The exploit has been made available to the public and could be used for attacks.
AnalysisAI
Stack-based buffer overflow in TRENDnet TEW-823DRU firmware 1.1.02b01 allows authenticated remote attackers to overwrite stack memory and achieve arbitrary code execution by supplying an oversized value to the wan_l2tp_password parameter processed by /cgi-bin/wan.cgi. The vulnerability stems from an unbounded strcpy() call in the NVRAM handling component, with no input length validation applied before the copy. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires valid credentials for the TRENDnet TEW-823DRU management interface, as confirmed by the PR:L metric in the CVSS 4.0 vector - 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 with vector AV:N/AC:L/AT:N/PR:L/UI:N and full VC/VI/VA plus SC/SI/SA impact represents a high-severity, low-complexity, network-accessible vulnerability that requires only authenticated (low-privilege) access - consistent with holding any valid management session on the device. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | An attacker who has obtained valid management credentials for the TRENDnet TEW-823DRU - through default credentials, credential reuse, or prior compromise - sends a crafted HTTP POST request to `/cgi-bin/wan.cgi` containing an oversized `wan_l2tp_password` value. The `strcpy()` call copies the payload into the undersized stack buffer, overwriting the saved return address with an attacker-controlled pointer. … |
| Remediation | No vendor-released patch has been identified in the available intelligence for TRENDnet TEW-823DRU firmware 1.1.02b01. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, identify all TRENDnet TEW-823DRU devices on your network and restrict management interface access (ports 8000/8080/443) to authorized administrator IP addresses via firewall rules; disable remote management if not operationally required. …
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Same weakness CWE-119 – Buffer Overflow
View allSame technique Buffer Overflow
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External POC / Exploit Code
Leaving vuln.today