EUVD-2026-63101
GHSA-qjr2-7w3m-c4fr
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-reachable CLI with no interaction needed but PR:L required; scope changes because device compromise impacts all traffic on the bridged network.
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 TRENDnet TEW-755AP up to 20260702. Affected is the function FUN_401000 of the file /sbin/mycli. The manipulation of the argument ssid results in stack-based buffer overflow. The attack may be launched remotely. The exploit has been made public and could be used.
AnalysisAI
Stack-based buffer overflow in TRENDnet TEW-755AP firmware (versions up to 20260702) allows remote low-privileged attackers to corrupt the stack in the /sbin/mycli binary by supplying an oversized ssid argument to function FUN_401000, potentially enabling arbitrary code execution on the device. A public Python proof-of-concept (poc-mycli-overflow.py) is available on GitHub, materially elevating practical risk beyond the theoretical score. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires network-level reachability to the TEW-755AP management interface and at least low-privilege authentication (confirmed by PR:L in the CVSS 4.0 vector). … 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/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H reflects network-accessible, low-complexity exploitation requiring only low-privilege authentication, with complete impact across both the vulnerable device and subsequent systems it bridges. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | An attacker with low-level access to the TEW-755AP management interface - for example, using default credentials or credentials obtained through prior reconnaissance - invokes the /sbin/mycli CLI and passes a crafted ssid value significantly exceeding the expected buffer length. The oversized input overwrites the stack frame in FUN_401000, corrupting the return address and redirecting execution to attacker-controlled code. … |
| Remediation | No vendor-released patch has been identified at time of analysis; monitor TRENDnet's security advisories and VulDB (https://vuldb.com/vuln/393085) for patch availability and apply any released firmware update immediately. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, identify all TEW-755AP devices in production and document their current firmware versions; isolate any device running version 20260702 or earlier from untrusted network segments and enable monitoring for SSID-based exploitation attempts. …
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Same weakness CWE-121 – Stack-based Buffer Overflow
View allSame technique Stack Overflow
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External POC / Exploit Code
Leaving vuln.today